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Preheat your grill to medium high heat.
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Form your ground beef into 6 patties that are slightly larger than your buns. Refrigerate while the grill heats, and you prepare the rest of your ingredients.
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Thinly slice the red onion. In a medium bowl combine onion, 1 Tbsp. white wine vinegar and a generous pinch of salt. Toss to combine. Set aside.
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Heat olive oil in a large skillet over medium heat. Add prosciutto slices carefully as to not tear them. Cook, turning occasionally until crisp. Remove from pan and place on a paper towel to absorb excess oil.
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To prepare the chipotle ranch sauce, whisk together all ingredients. Refrigerate until ready to serve.
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Remove burger patties from the fridge. Generously season both sides with salt and pepper and place on the grill over direct heat. Brush the top of each patty with 1/3 Tbsp. of spicy mustard. Cook 4-5 minutes, flip, and brush the other side with spicy mustard. Cook until burger reaches desired doneness. Top each burger with a slice of cheese and close grill lid until cheese melts, about one minute. Remove from heat.
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7. To assemble the burgers; Toss purple cabbage with burger sauce. Place a generous spoonful of cabbage mixture on the bottom of the bun. Top with a cheesy burger patty. Add a slice of crispy prosciutto, sliced dill pickles, and top with a pinch of pickled red onions. Add top bun and enjoy!