In a large bowl, mix together first 8 ingredients (beef through parsley) with your hands until evenly incorporated. Divide mixture evenly between 12 muffin tins, gently shaping into small meat loaves.
In a small bowl, mix together ketchup and mustard. Brush each meat loaf cup evenly with sauce. Sprinkle each cup evenly with shredded cheese before baking in oven for 15 minutes or until cooked through.