Grilled Steakburgers with Frozen Custard Aioli and Crispy Onions

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Juicy grilled steakburgers topped with a unique frozen custard aioli and crispy fried onions for a flavorful twist on a classic fast-casual favorite. This american-inspired beef ready in about 35 minutes blends ground beef (80/20), salt, black pepper into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 600 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. 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: 20 min Cook: 15 min Serves 4 American cuisine 600 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat grill to medium-high heat (about 400°F). Meanwhile, form 1 lb ground beef into four 4-inch patties, pressing a slight indentation into the center of each. Season both sides with 1 tsp salt and 1/2 tsp black pepper.
  2. Step 2: In a small bowl, stir together 1/3 cup frozen custard, 1/4 cup mayonnaise, and 1/4 tsp garlic powder until smooth. Refrigerate until ready to serve.
  3. Step 3: Heat 1 cup vegetable oil in a deep skillet over medium-high heat. Toss 1 medium thinly sliced yellow onion with 1/2 cup all-purpose flour to coat. Fry the coated onion slices in batches for 2-3 minutes until golden brown and crispy; drain on paper towels.
  4. Step 4: Grill the burger patties for 4-5 minutes per side or until desired doneness is reached.
  5. Step 5: Toast 4 burger buns on the grill for 1 minute until lightly browned.
  6. Step 6: Assemble burgers by spreading about 1 tbsp frozen custard aioli on the bottom bun, adding a cooked patty, topping with 2 tomato slices, a lettuce leaf, and a handful of crispy onions. Cover with the top bun and serve immediately.

Equipment for this recipe

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Frequently asked questions

How long does Grilled Steakburgers with Frozen Custard Aioli and Crispy Onions take to make?

Total time is about 35 minutes (20 min prep + 15 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Grilled Steakburgers with Frozen Custard Aioli and Crispy Onions?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Grilled Steakburgers with Frozen Custard Aioli and Crispy Onions?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Grilled Steakburgers with Frozen Custard Aioli and Crispy Onions for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Grilled Steakburgers with Frozen Custard Aioli and Crispy Onions?

American beef like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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