Garlic Butter Croissant Smash Burgers 🍔🥐🧄
✨ Why This Recipe Works
Crispy-edged, juicy 80/20 beef smash patties topped with melted cheddar, deeply caramelized onions, and homemade secret burger sauce on golden garlic-butter toasted croissants!
Crafted with everyday pantry staples and perfected in Mery's home kitchen, this Garlic Butter Croissant Smash Burgers 🍔🥐🧄 brings authentic comfort and vibrant flavors straight to your table. Every step has been carefully timed and measured so home cooks of any skill level can recreate foolproof, delicious results with ease.
With a quick 20 minutes of prep and 15 minutes of cooking, this wholesome dish balances ease and rich flavor without requiring complicated culinary equipment.
📜 Deep-Dive Food History • 🌲 Wild Foraging & ASMR Cooking • 🍲 Ancient Recipes Brought to Life
🥗 Ingredients (tap to check off)
- 2 tbsp olive oil
- 1 tbsp butter
- 1 whole large yellow onion, diced
- 2 tbsp mayonnaise
- 1 tbsp ketchup
- 1 tbsp yellow mustard
- 0.5 tsp salt, black pepper & garlic powder mix
- 1 tsp grilled onions (reserved from caramelized onions)
- 1 tsp sweet or dill relish
- 4 croissants fresh bakery croissants, halved
- 2 tbsp butter, melted
- 2 cloves garlic cloves, finely minced
- 1 tbsp fresh parsley, chopped (optional)
- 1 lb 80/20 ground beef (divided into 2–3 oz balls)
- 1 tsp burger seasoning (salt, pepper, garlic & onion powder)
- 6 slices sharp cheddar cheese, sliced
- 1 tbsp avocado oil (for high-heat searing)
- 2 medium fresh ripe tomatoes, sliced
- 4 leaves crisp fresh lettuce leaves
👨🍳 Step-by-Step Instructions
Caramelize the Onions
Heat 2 tbsp olive oil and 1 tbsp butter in a skillet over medium-low heat. Add the diced onions and cook slowly, stirring occasionally, until deeply golden brown, sweet, and tender (about 15–20 minutes). Remove from heat and reserve 1 teaspoon of the caramelized onions for the burger sauce.
Make the Secret Burger Sauce
In a small bowl, whisk together the mayonnaise, ketchup, yellow mustard, garlic-salt-pepper spice blend, relish, and the reserved teaspoon of caramelized grilled onions. Mix until creamy and smooth, then chill in the refrigerator until ready to assemble.
Toast the Garlic Butter Croissants
In a small dish, mix the 2 tbsp melted butter with minced garlic (and optional chopped fresh parsley). Slice the croissants in half horizontally and brush the cut surfaces generously with garlic butter. Place cut-side down in a dry skillet over medium heat and toast for 1–2 minutes until crisp and golden brown. Set aside.
Smash the Beef Patties
Heat a heavy cast-iron skillet or flat griddle over high heat until smoking hot, then brush lightly with avocado oil. Place the cold beef balls onto the hot skillet, place a small square of parchment paper over each, and press down firmly with a heavy burger smasher or stiff spatula until thin with lacy edges. Season generously with burger seasoning.
Cheese & Melt to Perfection
Cook undisturbed for about 2 minutes until the edges are deeply browned, caramelized, and crispy. Flip the patties with a sharp spatula, immediately top each patty with a slice of cheddar cheese, and cook for another 1 minute until the cheese is melted and bubbling.
Assemble & Serve
Spread a generous layer of burger sauce over the bottom croissant halves. Layer with crisp lettuce, sliced tomatoes, sizzling cheesy smash patties, a rich spoonful of caramelized onions, and finish with the garlic-buttered croissant top buns. Serve immediately while warm and juicy!
❄️ Storing & Reheating Leftovers
Refrigeration: Allow the dish to cool to room temperature, then store in an airtight glass container in the refrigerator for up to 3 to 4 days.
Reheating: Reheat in a skillet over medium-low heat with a small splash of water or olive oil, or in a 350°F (175°C) oven until thoroughly warmed. This preserves the delicate moisture without drying out the texture.
🍳 Recommended Kitchen Equipment
Kitchen Note: Having the right kitchen tools ensures foolproof results. We recommend items tested in our own home kitchen.
📊 Nutritional Breakdown (Per Serving)
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