Cheeseburger Quesadilla
Ingredients: 1 teaspoon butter ½ small yellow onion, chopped 2 pounds ground beef 1 tablespoon Worcestershire sauce 1 teaspoon salt 1 teaspoon ground black pepper ½ teaspoon garlic powder cooking spray 8 (8 inch) flour tortillas 2 cups shredded Colby cheese 4 teaspoons ketchup, or to taste 4 teaspoons yellow mustard, or to taste 4... » read more