Thin-Crust Vegetable Pizza

Ingredients

• 1 (6 1/2-ounce) package pizza crust mix
• 1/3 cup yellow cornmeal
• 2/3 cup hot water
• Vegetable cooking spray
• 1 teaspoon vegetable oil
• 1 large onion, sliced
• 1 small yellow squash, sliced
• 1 1/2 teaspoons salt-free herb-and-spice blend
• 1/4 teaspoon salt
• 2 tablespoons fat-free Italian dressing
• 1 medium-size tomato, cut into 6 slices
• 1 1/2 cups (6 ounces) shredded reduced-fat sharp Cheddar cheese