Grilled Cap City Diner Burger with Smoked Cheddar and Pickled Red Onion

By AislePrompt Editorial · Published 2026-05-13 · Updated 2026-05-13

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.

Inspired by Cap City Fine Diner’s classic American flavors, this burger features a juicy grilled patty topped with smoked cheddar and tangy pickled red onions. This American-inspired sandwich and wrap recipe, ready in about 27 minutes, pairs ground beef (80/20), salt, black pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 650 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: 12 min Serves 4 American cuisine 650 cal/serving

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Ingredients

1 lb ground beef (80/20)
1 tsp salt
1/2 tsp black pepper
4 smoked cheddar cheese slices
1 medium red onion, thinly sliced
1/2 cup apple cider vinegar
2 tbsp granulated sugar
1 tsp kosher salt
4 burger buns
1/4 cup mayonnaise
2 tbsp butter, softened
4 lettuce leaves
4 tomato slices

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Instructions

Step 1: Combine 1/2 cup apple cider vinegar, 2 tbsp granulated sugar, 1 tsp kosher salt, and 1/2 cup water in a small bowl. Add 1 medium thinly sliced red onion and let it pickle for at least 30 minutes.
Step 2: Preheat grill to medium-high heat (about 400°F). In a bowl, season 1 lb ground beef with 1 tsp salt and 1/2 tsp black pepper, then gently form into four 4-inch patties.
Step 3: Butter the insides of 4 burger buns with 2 tbsp softened butter.
Step 4: Grill the patties for about 4 minutes per side, placing 1 slice smoked cheddar cheese on each during the last minute to melt.
Step 5: Toast the buttered buns on the grill for 1-2 minutes until golden.
Step 6: Spread 1 tbsp mayonnaise on each bun bottom, add a lettuce leaf, a cheddar-topped beef patty, 1 tomato slice, and a generous amount of pickled red onions. Cap with the top buns and serve immediately.