Cut asparagus into 1 inch pieces; peel and slice carrots and chop broccoli into small, bite-sized pieces.
Heat oven to 450° F, and spray a cookie sheet with cooking spray.
Roll out pizza dough into a 12-inch circle on the cookie sheet.
Prick dough throughout with a fork, and bake for 8 minutes. (If the dough puffs during baking, flatten with a spoon.)
Heat dressing to a boil in a nonstick skillet.
Stir in asparagus, carrots, and broccoli; return to a boil, then reduce heat to medium. Cover and cook 3-4 minutes or until vegetables are crisp-tender.
Place tomato slices on partially baked crust. Spread vegetable mixture evenly over tomatoes, then sprinkle with cheese.
Bake an additional 7-9 minutes until cheese is melted and crust is golden brown.
Serve with apple slices on the side.