Step 1

Preheat oven to 350 degrees F. Coat a 12-inch pizza pan with cooking spray.

Step 2

In a large skillet over medium-high heat, cook beef and onion, stirring until beef crumbles and is no longer pink; drain.

Step 3

Stir in ketchup, mustard, Cheddar cheese, salt, and pepper. Cook 1 to 2 minutes, or until cheese is melted. Remove from heat and set aside.

Step 4

Unroll crescent rolls. Place wide end of triangles in center of pizza pan, forming a ring, overlapping dough as necessary. Spoon meat mixture into center of each triangle. Bring smaller ends of triangles over meat, tucking ends under.

Step 5

Bake 20 minutes, or until rolls are golden. Serve warm.