Hamburger Muffins

Why I Love This Recipe
Like an all in one meatloaf sandwich, even kids love them. My Gramma's recipe, Hubby sure likes these for a lunch on the go!
Ingredients You'll Need
3 Tablespoons butter, softened
12 slices white bread
1 1/4 pounds ground beef
1 egg
1 small onion, chopped
1 (10.75 ounce) can condensed cream of mushroom soup
salt and pepper to taste
3/4 cup shredded Cheddar cheese
Directions
Preheat the oven to 350 degrees F (175 degrees C). Butter one side of each slice of bread, and press each slice butter-side down into the cups of a muffin tin.
In a medium bowl, mix together the ground beef, egg, onion, cream of mushroom soup, salt and pepper until well blended. Fill each bread cup with the mixture. Sprinkle shredded Cheddar cheese over the tops.
Bake for 30 minutes or until meat is cooked through.