So divine! These smelled amazing out of the oven! Even tastier in my belly!

1 pound ground beef
1 small onion, finely chopped
1 cup shredded cheddar cheese
2 cans (8 oz each) refrigerated crescent roll dough
1/2 teaspoon garlic powder
1/2 teaspoon salt
1/4 teaspoon black pepper
1 tablespoon Worcestershire sauce
1 tablespoon butter (optional, for brushing)