Beefy cupcakes

This recipe has to be the best one yet.  I love how convenient it is and I know exactly how much I'm eating. 

Ingredients:
Burger Mixture

1 lb lean (at least 80%) ground beef
1 large onion, chopped (1 cup)
1 tablespoon Worcestershire sauce
1 teaspoon garlic salt
1 cup shredded Cheddar cheese (4 oz)

Baking Mixture
1/2 cup milk
1/2 cup Original Bisquick® mix
2 eggs

Directions:
Heat oven to 375°F. Spray 12 regular-size muffin cups with cooking spray.
In 10-inch skillet, cook beef and onion over medium-high heat 5 to 7 minutes, stirring frequently, until beef is thoroughly cooked; drain. Cool 5 minutes; stir Worcestershire sauce and garlic.
In medium bowl, stir baking mixture ingredients with whisk or fork until blended.
Spoon 1 tablespoon baking mixture into each muffin cup. Top with about 1/4 cup burger mixture and a scoop of cheese. Spoon 1 tablespoon baking mixture onto burger mixture in each muffin cup.
Bake 25 to 30 minutes or until toothpick inserted in center comes out clean and tops are golden brown. Cool 5 minutes. With thin knife, loosen sides of pies from pan; remove from pan and place top sides up on cooling rack. Cool 10 minutes longer, and serve.

Stay hungry my friend.