Heat a pan over medium-high heat and add 1 tbsp of avocado oil. While the pan heats up, season both sides of your burger patties with salt and pepper.

Once the pan is hot, add the patties and cook for about 5 minutes per side, or until they're cooked to your liking.

While the burgers are cooking, make the sauce: In a small bowl, mix together mayo, mustard, ketchup, dill pickle relish, garlic powder, and white vinegar. Stir until smooth and set aside.

Now it's time to assemble! Start with a few leaves of iceberg lettuce as your base, then layer on a burger patty (or stack it for a double). Add sliced cheese, tomato, and either caramelized or fresh onion—whatever you're into. Finish it off with a generous drizzle of the homemade sauce and enjoy!