Turkey Burger Sheet Pan Dinner

Name: Turkey Burger Sheet Pan Dinner
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 2 pounds ground turkey, dark meat; 1 lemon, grated zest; 2 sprigs rosemary needles; ¼ cup fresh blueberries; 2 teaspoon fine salt; 2 tablespoons bacon fat, lard or ghee; 1 large egg or 1 flax egg; 1 bunch dino kale, chopped; 1 pound brussles, quartered; ½ onion sliced; 2 tbsp avo; ½ teaspoon fine salt; 1/2 teaspoon garlic powder; 1/2 teaspoon ground pepper