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Crispy Two-Patty Burgers with Caramelized Onions and Secret Sauce

Course Main Course
Keyword buger, Secret Sauce
Prep Time 15 minutes
Cook Time 25 minutes
Bake Time 40 minutes
Total Time 1 hour 20 minutes
Servings 2 people

Ingredients

For the Burgers

  • 2 tsp avocado oil, divided
  • 1 large yellow onion halved and thinly sliced
  • 1/2 tsp kosher salt, divided
  • 1/4 tsp freshly ground black pepper
  • 1/2 lb ground chuck, formed into four ¼-inch-thick patties
  • 2 tsp Whole30 compatible yellow mustard
  • 2 Bibb lettuce leaves
  • 1/4 cup Thrive Market Secret Sauce or use the "Special Sauce" recipe below to make your own!
  • 8 Whole30-compatible dill pickle chips
  • 2 thin slices ripe tomato

For the Seasoned Oven Fries

  • 2 medium (6 oz) Russet potatoes, scrubbed
  • 2 tsp olive oil
  • 1/4 tsp coarse salt
  • 1/4 tsp freshly ground black pepper
  • 1/4 tsp onion powder
  • Whole30 Approved or compatible ketchup

Special Sauce

  • 1/2 cup compatible mayo
  • 2 tbsp compatible ketchup
  • 1 tbsp coconut aminos
  • 1 tbsp finely chopped pickle
  • 1 tsp mustard
  • 1/2 tsp garlic powder
  • 1/2 tsp onion powder

Instructions

  • MAKE special sauce by whisking together all ingredients, if using in place of Thrive Market Secret Sauce.
  • MAKE the Burgers: In a large nonstick skillet, heat 1 teaspoon of the oil over medium-high heat until shimmering. Add onions and 1/4 teaspoon of the salt. Reduce heat to medium-low and cook, stirring occasionally, until onions are well-browned, about 15 minutes. When onions begin to sizzle loudly and look dry, add 1 tablespoon water; stir. Cook until water evaporates, and onions start sizzling again. Repeat, adding 1 tablespoon water and cooking until onions are very soft and dark brown, about 3 times total. Set aside. 
  • IN a large cast-iron skillet, heat the remaining 1 teaspoon oil over medium-high heat until lightly smoking. Season the patties with the remaining 1/4 teaspoon salt and black pepper. Add the patties to the pan. Cook, undisturbed, until well-browned and crisp on bottom, about 2 to 3 minutes. Meanwhile, spread mustard on the raw side of each patty. Turn patties and cook for 1 minute on the mustard side.
  • FOR each burger, place 2 stacked lettuce leaves on each of two plates. Top each with 1 tablespoon of the Secret Sauce (or homemade special sauce), four pickle chips, one patty, half of the onions, one tomato slice, another patty, and another 1 tablespoon of Secret Sauce or homemade special sauce. 
  • MAKE the Oven Fries: Preheat oven to 400°F. Cut each potato into 12 wedges. In a medium bowl, combine potatoes, oil, salt, black pepper, and onion powder; toss to coat. Spread in a single layer on a large parchment-lined rimmed baking sheet. Bake until potatoes are browned and crisp, 40 to 45 minutes. Serve with ketchup.