Heat oven to 350°F. Spray 12 regular-size muffin cups with cooking spray.
Unroll each can of dough into 1 large rectangle; if using crescent roll dough, press perforations to seal. Cut each rectangle into 8 rows by 3 rows, to make 24 pieces per rectangle (48 pieces of dough total). Roll each piece of dough into a ball.
In small bowl, mix melted butter, rosemary and garlic powder. Roll each ball in butter mixture. Place 4 balls in each muffin cup.
Bake 17 to 19 minutes or until golden brown and no longer doughy in center. Sprinkle cheese evenly in each cup. Bake 3 to 5 minutes longer or until cheese is melted. Let stand 1 minute. Remove from pan. Serve warm.