I got this recipe from The Girl Who Ate Everything. I follow it pretty spot on and oftentimes double the recipe for guests or leftovers.
1/2 cup onion, diced finely
1 teaspoon minced garlic
3/4 cup carrot shavings (use a vegetable peeler to make shavings)
1 cup celery, sliced thinly
1 head iceberg lettuce, leaves removed to form cups
salt and pepper
1/2 cup Buffalo wing sauce
1. In a large skillet, saute the onions over medium heat until soft (3-4 minutes). Add garlic and cook for 1 more minute. Add ground turkey, season with a dash of salt and pepper, brown meat and cook until cooked through. Drain any grease if necessary.
2. Return meat to pan and stir in the wing sauce. Reduce heat to low and simmer for a couple of minutes.
3. Prepare lettuce cups. Place spoonful of meat into lettuce cup, top with a few carrot shavings and chopped celery. Sprinkle with desired toppings.