Preheat oven to 350 and line muffin tin with cupcake liners.
In a large bowl, mix together all ingredients, using your hands.
Form balls of about 3/4 c and pat down into muffin liners.
Bake for 25-30 minutes, or until cooked through
Prepare instant mashed potatoes according to package directions. Stir in food coloring of choice and allow to cool slightly.
Fill a piping bag with the mashed potatoes and pipe onto the meatloaf.