Cheeseburger Cups

Directions

1. Heat the oven to 375 degrees. Spray 12 regular-size muffin cups with non-stick cooking spray.
2. In a 10-inch skillet, cook and stir the ground beef and onion over medium-high heat for 8 minutes or until the beef is brown; drain. In a medium bowl, stir together the beef mixture, ketchup, mustard and salt. Set aside.
3. Unroll the dough (if using crescent rolls, firmly press perforations to seal). Press into a 12x8-inch rectangle. Cut into 4 rows by 3 rows to form 12 pieces. Press each piece gently into the muffin cups.
4. Spoon 3 tablespoons of the beef mixture into the dough cups. Bake for 12 to 17 minutes or until the cups are golden.
5. Sprinkle the top of each the cheese. Bake for 1 to 2 minutes longer or until the cheese begins to melt.
6. Top each with diced tomato, a dollop of sour cream and a few shreds of lettuce.