Caramelized Onion and Mushroom Pizza - Plan to Eat

Spray 15x10-inch or larger dark or nonstick cookie sheet with cooking spray. Heat oven to 400°F (425°F for all other pan types). In 10-inch nonstick skillet, melt butter over medium heat. Add onion and 1/4 teaspoon salt; cook 3 to 5 minutes, stirring occasionally, until onion softens. Add mushrooms; cook 5 to 7 minutes or until softened and browned. Stir in garlic; remove from heat.Unroll dough on pan; starting at center, press dough into 15x10-inch rectangle. Brush with olive oil. Bake 8 minutes.Spread mushroom mixture evenly over dough. Top with spinach, mozzarella cheese and Parmesan cheese. Bake 5 to 9 minutes or until crust is golden brown and cheese is melted.Sprinkle with thyme. To serve, cut into 6 rows by 3 rows.