Prish Ray, 31, Minneapolis
1. Preheat oven to 375°F. Quarter pizza dough; cover. Dust a baking sheet with flour. Warm 1 Tbsp. oil in a skillet over medium heat. Add onion and bell pepper, season with salt and pepper and sauté until tender, about 5 minutes. Remove to a bowl. Warm 1 Tbsp. oil in skillet. Sauté mushrooms until they give up their liquid, about 4 minutes. Add to bowl; stir.
2. Roll each piece of dough into an 8-inch circle. Spread 1/4 cup sauce onto each round, leaving a 1/2-inch border. Divide vegetables and olives among rounds; sprinkle with mozzarella.
3. Fold rounds in half, pressing to seal. Sprinkle calzones with pepper and Parmesan. Transfer to baking sheet and bake 15 to 20 minutes, until golden brown. Serve.