Smash Burgers with Caramelized Onions & Special Sauce
Smash Burgers with Caramelized Onions are the ultimate Father’s Day treat. Crispy, juicy, and topped with sweet onions and tangy special sauce, they’re easy to make for a backyard barbecue or a cozy dinner at home. These diner-style favorites are perfect for firing up the grill or a cast-iron skillet. Here’s how to make them at home for a next-level dinner.
Ingredients for Smash Burgers with Caramelized Onions
- 1½ lbs ground beef (80/20 blend)
- 1 large onion, thinly sliced
- 2 tablespoons butter
- 1 tablespoon olive oil
- 4 slices of your favorite cheese
- 4 soft burger buns
- Kosher salt and freshly ground black pepper
Special Sauce:
- ½ cup mayo
- 2 tablespoons ketchup
- 1 tablespoon Dijon mustard
- 1 tablespoon pickle relish
- Pinch of paprika
How to Make Smash Burgers with Caramelized Onions
1. Caramelize the Onions
In a skillet over medium-low heat, melt butter with olive oil. Add sliced onions and cook, stirring occasionally, until deep golden brown and jammy, about 20–30 minutes.
2. Make the Special Sauce
In a small bowl, mix mayo, ketchup, mustard, relish, and paprika. Set aside.
3. Form and Smash the Patties
Divide the ground beef into 4 loose balls (don’t overwork the meat). Heat a cast-iron skillet or griddle over medium-high heat. Place a beef ball in the hot skillet and smash it down with a heavy spatula. Season generously with salt and pepper.
4. Cook and Melt
Cook for 2–3 minutes until crispy on the bottom. Flip and add cheese. Cook another 1–2 minutes until melted and juicy.
5. Assemble the Smash Burgers
Toast the burger buns. Spread special sauce on each bun, then layer with the caramelized onions, smash burger patties, and any toppings you like. Serve hot with a side of fries or onion rings.
Serving Tips for Father’s Day Smash Burgers
- Add crispy bacon or a fried egg for extra indulgence.
- Pair with an ice-cold beer or a classic milkshake.
- Let everyone build their own burger for a fun, interactive dinner.
Final Tips for Epic Smash Burgers
- Don’t press the burger after the initial smash—it’ll lose juices.
- Use high heat to get that crispy crust.
- Caramelized onions can be made ahead to save time.
Final Words for a Juicy Father’s Day Treat
Ready to treat Dad to a next-level burger experience? These smash burgers with caramelized onions and special sauce are the ultimate way to make Father’s Day unforgettable. Fire up the grill or sizzle up the skillet – either way, these diner-style favorites bring the perfect blend of crispy edges, juicy centers, and rich flavor. Enjoy every bite.
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