Bacon Cheeseburger Roll Up

1 lb. lean ground beef
4 slices OSCAR MAYER Bacon, chopped
1 small onion, chopped
1/2 lb. (8 oz.) VELVEETA Pasteurized Prepared Cheese Product, cut into 1/2-inch cubes
1 pkg. (13.8 oz.) refrigerated pizza crust
HEAT oven to 400°F. Brown ground beef with bacon and onions in large skillet on medium-high heat; drain. Return meat mixture to skillet. Add VELVEETA; cook until melted, stirring frequently. Cool 10 min.
UNROLL pizza dough onto baking sheet sprayed with cooking spray. Press into 15x8-inch rectangle; top with meat mixture. Roll up, starting at one of the long sides. Rearrange if necessary so roll is seam-side down.
BAKE 20 to 25 min. or until golden brown.
(You can leave out the bacon or substitute in mushrooms!)