1Heat oven to 400°F. Spray or grease 15x10-inch or larger dark or nonstick cookie sheet. Unroll dough on cookie sheet; starting at center, press dough into 15x10-inch rectangle.
2Spread ranch dressing evenly over dough. Top with remaining ingredients.
3Bake 13 to 16 minutes or until crust is golden brown and cheese is melted.