Scratch-Made Hand-Pattied Burger with Caramelized Onions and Garlic Aioli

By AislePrompt Editorial · Published 2026-05-11 · Updated 2026-05-11

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

A juicy hand-formed beef burger topped with sweet caramelized onions and a rich garlic aioli, served on a toasted bun for a satisfying meal. This American-inspired sandwich and wrap recipe, ready in about 45 minutes, pairs ground beef (85/15), salt, black pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 600 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 30 min Serves 4 American cuisine 600 cal/serving

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Ingredients

1 lb ground beef (85/15)
1 tsp salt
1/2 tsp black pepper
1 large yellow onion, thinly sliced
2 tbsp unsalted butter
1/3 cup mayonnaise
1 garlic clove, minced
1 tsp lemon juice
4 burger buns
4 romaine lettuce leaves
1 medium tomato, sliced
4 cheddar cheese slices

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Instructions

Step 1: Heat 2 tbsp unsalted butter in a skillet over medium-low heat. Add 1 large thinly sliced yellow onion and cook slowly for 20-25 minutes, stirring occasionally, until onions are deep golden brown and caramelized. Remove from heat.
Step 2: In a medium bowl, mix 1 lb ground beef gently with 1 tsp salt and 1/2 tsp black pepper. Form into four 4-inch diameter patties.
Step 3: Preheat grill or skillet to medium-high heat. Cook patties for 4 minutes on the first side, flip, and top each with a cheddar slice. Cook an additional 3-4 minutes for medium doneness.
Step 4: Meanwhile, mix 1/3 cup mayonnaise with 1 minced garlic clove and 1 tsp lemon juice in a small bowl to make garlic aioli.
Step 5: Lightly toast 4 burger buns on the grill or in a toaster.
Step 6: Spread garlic aioli on both bun halves. On the bottom bun, layer romaine lettuce leaf, tomato slice, a burger patty with melted cheddar, and a generous spoonful of caramelized onions.
Step 7: Top with the bun lid and serve immediately with your favorite side.