Breakfast & Brunch
A smash burger recipe with egg that features a runny yolk center is the ultimate breakfast game-changer—juicy, flavorful, and impossible to resist. 🔥 The secret lies in the smashing technique, which creates a perfectly seared patty with a caramelized crust and tender interior.
This recipe transforms a simple burger into a restaurant-worthy dish, elevated by the rich, velvety magic of a perfectly cooked egg on top.
The beauty of this recipe is its simplicity: ground beef, salt, pepper, and a hot skillet are all you need for the patty. The smashing method ensures even cooking and maximum crispiness, while the egg adds a luxurious touch that makes every bite feel special.
Whether you're serving it for brunch or a late-night snack, this burger delivers bold flavors and satisfying textures in every mouthful.
What sets this smash burger apart is the balance of crispy, tender beef paired with a runny yolk that ties everything together. The high heat of the skillet locks in juices, while the egg adds a creamy, savory contrast that takes the dish to the next level.
Serve it on a toasted bun with your favorite toppings, or keep it open-faced for a messier, more indulgent experience.
Ready in just 15 minutes, this recipe is perfect for a quick breakfast or a weekend brunch that feels like a celebration. The crispy patty and runny yolk combination is pure comfort food at its finest, guaranteed to impress even the pickiest eaters. Let's get cooking!
Ingredients for smash burger recipe with egg
Juicy beef, crispy crust, and velvety yolks—here's what makes this smash burger shine.
| Ingredient | Amount | Notes |
|---|---|---|
| Ground Beef (80/20) 🥩 | 1 ½ lb | Cold from fridge for even cooking |
| Large Eggs 🥚 | 4 whole | Room temperature for perfect runny yolks |
| Unsalted Butter 🧈 | 4 tbsp | High smoke point for skillet |
| Kosher Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Freshly Ground Black Pepper 🌶️ | 1 tsp | Cracked peppercorns for best flavor |
| Brioche Burger Buns 🍞 | 4 whole | Toasted for extra crispiness |
| Yellow American Cheese Slices 🧀 | 4 slices | Melted for classic smash burger |
| Red Leaf Lettuce 🥬 | 4 leaves | Butter lettuce works too |
| Red Onion 🧅 | ½ whole | Thinly sliced for sharp bite |
| Pickle Slices 🥒 | ½ cup | Dill or bread & butter preferred |
| Vegetable Oil 🫒 | ¼ cup | For skillet preheating |
| Mayonnaise 🥫 | 2 tbsp | For optional patty spread |
The beef is everything. Grab 80/20 ground chuck—that fat keeps things juicy. Kroger or Trader Joe's usually have it pre-ground, but if you're buying a block, keep it cold until ready to use. The fat ratio matters more than the brand. For the eggs, room temperature is key—cold yolks won't run properly. I always crack them into a small bowl first to check for any shell surprises. The butter? Get the unsalted kind—you control the seasoning here, and salted throws off the balance.
No brioche buns? Potato buns work in a pinch, but they won't be as tender. Short on American cheese? Swiss or cheddar melts beautifully too. The lettuce can be iceberg if that's what you've got—just pat it dry first. For the onions, red is sharper than yellow, but yellow adds sweetness. Pickles? Dill or bread & butter are classic, but whatever you like is perfect. The mayo is optional but worth it—spread a thin layer on the patty before toasting for extra richness. And if you're feeling fancy, add a sprinkle of smoked paprika to the beef mix.
Prep the toppings first—they go on fast. Toast the buns in the same skillet after cooking the patties for maximum crispiness. The beef stays warm for about 5 minutes after cooking, so assemble everything right before serving. Leftover patties? Freeze them for up to 3 months—reheat in a hot skillet for 2-3 minutes per side. The eggs are best made fresh, but you can prep the rest of the toppings ahead. Just keep the cheese separate until serving so it doesn't get soggy.
Why You'll Love This Recipe
- No-Fuss Technique: I smash that beef patty thin with my palm—no rolling, no shaping, just pure satisfaction. The butter pools around the edges while the egg yolk stays runny inside, turning every bite into a little flavor party.
- Juicy Magic: That 80/20 fat ratio keeps it moist, but the real star? The egg. One cracked into the center, cooked just enough to set but still silky. It’s like biting into a warm, buttery hug with every chew.
- Weeknight Hero: Between us, this is my go-to when I’m starving and the takeout menu feels overwhelming. Toss in a handful of greens or a slice of cheddar, and suddenly you’ve got dinner—no stress, no fuss.
- Budget Win: Ground beef and eggs? Check. Butter and salt? Already in my pantry. It’s the kind of meal that stretches a few dollars without sacrificing taste, and leftovers? They’re just as good cold the next day.
Step-by-step instructions for smash burgers with egg yolk magic
Here's how to create perfectly crispy smash burgers with that coveted runny yolk center.
🍳 Step 1: Prep the Patties for Maximum Crisp
Divide the 1.5 lb ground beef (80/20) into 4 equal portions (about 3.75 oz each). I like to use a food scale for precision here—uneven portions lead to uneven cooking. Gently shape each portion into a loose oval, about 1 inch thick. The looser the shape, the better they'll flatten and develop that perfect crust.
Place the shaped patties on a plate and let them sit at room temperature for 15-20 minutes while you prep everything else. This ensures even cooking through the center. I also recommend taking this time to crack the 4 whole large eggs into a small bowl and let them warm to room temperature—they'll create that perfect runny yolk we're after.
🔥 Step 2: Smash and Sear the Patties
Heat a clean cast-iron skillet over medium-high heat until it's screaming hot. Add 2 tablespoons of vegetable oil (enough to coat the bottom) and let it shimmer for 30 seconds. Place one patty in the center of the skillet and immediately press down firmly with a spatula or burger press. You want to flatten it to about ¼ inch thick—this creates that signature crispy edge.
Let the patty cook undisturbed for 2 minutes until the edges are deep golden brown and crispy. You'll see those beautiful Maillard reaction bubbles forming—this is when all the flavor develops. Flip the patty and repeat on the other side for another 2 minutes. The key here is patience—don't rush the crisping process or you'll end up with tough edges.
🍳 Step 3: Make the Egg Yolk Window
While the patties cook, melt 2 tablespoons of unsalted butter in a separate small skillet over low heat. Crack one of the large eggs into the melted butter. Cover the skillet and cook for 2-3 minutes until the whites are just set but the yolk remains completely runny. The butter should create a protective barrier that keeps the yolk intact.
Transfer the cooked egg to a small plate and repeat with the remaining 3 eggs. Here's the thing—you want that yolk to be almost custard-like in texture. If you see the whites starting to overcook or the yolk firming up, remove the skillet from heat immediately. These eggs should slide right out of the skillet in one piece with that perfect runny center.
🥘 Step 4: Assemble the Burgers with Perfect Timing
Remove the cooked patties from the skillet and let them rest for 1 minute on a wire rack. This resting period prevents them from getting soggy when you add the cheese. While they rest, lightly toast the brioche burger buns in a dry skillet or toaster for 30 seconds per side until golden brown and crispy.
Make a small well in the center of each patty and carefully place one of the cooked eggs into the well. Top each patty with a slice of yellow American cheese and let it melt for 20-30 seconds until gooey. The cheese should create a perfect seal around the egg yolk, keeping it contained when you assemble the burger. This is where the magic happens—the melted cheese creates that beautiful yolk pocket when you bite in.
🍽️ Step 5: Build and Serve Immediately
Assemble each burger by placing a toasted brioche bun on the bottom half, adding the patty with melted cheese and egg, then topping with red leaf lettuce, thinly sliced red onion, and pickle slices. For that extra touch, spread a thin layer of 2 tablespoons mayonnaise on the inside of the top bun before closing.
Serve immediately while the patties are still crispy and the egg yolks are perfectly runny. The brioche bun should be warm and slightly crispy, the patty should have that perfect crust with juicy beef inside, and that egg yolk should break like liquid gold when you take your first bite. This isn't just a burger—it's an experience. And remember, the secret to success is timing: keep everything hot and ready to assemble all at once.
Pro Tips For Making Smash Burger Recipe With Egg
- SMASH FLAT FAST: Use a cold skillet—no butter yet—and press the patty down with a spatula or wine bottle until it’s paper-thin. The cold metal conducts heat better, so you’ll get that perfect crust without burning the edges before the center cooks.
- SALT THE FAT FIRST: Before shaping the patty, sprinkle a generous pinch of kosher salt directly onto the ground beef and work it into the fat with your fingers. The salt dissolves into the fat first, seasoning the meat from the inside out as it cooks.
- EGG ON THE EDGE: Crack the egg into a small ramekin, not the pan—this keeps the yolk intact and makes it easier to slide onto the burger. Drop it onto the hot patty when it’s seared but still slightly undercooked, so the egg cooks gently without scrambling.
- LOWER THE HEAT LAST: Once the egg is added, immediately reduce the heat to medium-low. I learned this the hard way—high heat turns the egg into a rubbery mess. Let the residual heat finish cooking it, and you’ll get a runny, golden yolk every time.
Creative variations of these flavors
Breakfast Brunch Twist
Turn this smash burger into a brunch star by swapping the brioche buns for buttery croissants—they add a delicate, flaky contrast to the crispy patty. I like to toast them lightly and add a thin layer of garlic-herb butter before assembling.
For extra decadence, top with crispy bacon and avocado slices instead of lettuce. This version feels like a gourmet breakfast in burger form. 🍳
Spicy Southwest Style
Add Southwestern flair by mixing ½ teaspoon chili powder and ¼ teaspoon cumin into the beef before shaping the patties. Swap the American cheese for smoked cheddar and top with pickled jalapeños, diced avocado, and a drizzle of sriracha mayo.
The heat from the jalapeños pairs perfectly with the creamy yolk. Trust me, this takes your burger to a whole new level. 🌶️
Gourmet Mushroom Upgrade
Elevate the patty with sautéed mushrooms—I use a mix of cremini and shiitake finely chopped and cooked in butter with a pinch of thyme. Fold the mushrooms into the beef before shaping the patties.
The earthy flavor complements the egg beautifully. For an extra touch, garnish with chopped parsley and a sprinkle of crumbled feta on top of the yolk. It’s like a fancy steakhouse burger. ✨
Open-Face Luxe Version
Skip the bun entirely for a messy, indulgent experience. Pile the crispy patty with melted cheese, the runny egg, and all the toppings on a toasted baguette slice or a crispy potato round.
Drizzle with truffle oil or hot honey for a sweet-spicy kick. This version is perfect for sharing or when you want to go all out. The yolk becomes a creamy, golden centerpiece. 💛
Kid-Friendly Adaptation
For picky eaters, keep the smash burger classic but swap the egg for a well-done fried egg (no runny yolk) and add shredded cheddar instead of American cheese. Use whole wheat buns and let them customize their own toppings with ketchup, mustard, or mild pickles.
The crispy patty is always a hit, and the egg makes it feel special without being too adventurous. 🍽️
Global Fusion Twist
Get creative with global flavors—try a Korean-inspired version with gochujang-mayo (mix 1 tbsp gochujang with 2 tbsp mayo), kimchi, and a fried egg with a sprinkle of sesame seeds.
Or go Mediterranean with feta, olives, and tzatziki instead of mayo. The runny yolk ties everything together beautifully, no matter the flavor profile. 🗺️
Nutrition facts
Frequently asked questions
Why does smashing the beef create a better burger?
Smashing transforms the patty into a thin, even layer that sears perfectly on all sides, creating a crispy crust while keeping the inside juicy. The high heat quickly develops deep flavor through the Maillard reaction, which happens faster with thinner patties. Plus, it eliminates the need to flip constantly—just press and let the magic happen!
How do I get the egg yolk perfectly runny?
Use room temperature eggs and cook them in low heat butter for exactly 2-3 minutes with the skillet covered. The butter acts as an insulator, protecting the yolk while the whites set. Remove immediately when the whites are just firm—the yolk should still jiggle like liquid gold.
Can I make these burgers ahead of time?
Cook the patties fresh—they're best served immediately for maximum crispiness. However, you can prep the toppings (chop veggies, slice cheese) and store them separately in the fridge. The eggs should be made fresh, but you can toast the buns ahead and reheat them in a 200°F oven for 5 minutes before assembling.
What's the best way to reheat leftover patties?
Reheat in a hot skillet over medium-high heat for 2-3 minutes per side until crispy again. Avoid microwaving—they'll get soggy. For extra flavor, add a pat of butter to the skillet before reheating. The patties will never be as crispy as fresh, but they'll still taste delicious.
Can I substitute ground beef with another protein?
Try ground turkey (93/7) or chicken thigh for a lighter option, or ground pork for richer flavor. The smashing technique works best with slightly fatty meats—lean proteins may dry out. For plant-based, use beyond meat or impossible burger patties and follow the same smashing method.