Instructions: Let bread dough thaw and rise until doubled in size, 3 - 4 hours at room temperature. Preheat oven to 400 . Divide risen dough into thirds. Pat 1/3 of dough into bottom and up sides of baker. Toss spinach, mushrooms and onions; season with salt and pepper. Layer half of mozzarella cheese on top of dough; top with spinach mixture. Layer with remaining mozzarella cheese.

Roll out 1/3 dough to a 9" circle. Place on top of pizza. Pinch together top and bottom crusts. Bake 35 minutes. Spread pizza sauce over top; sprinkle with parmesan cheese. Bake an additional 10 minutes. Cool 10 minutes; gently loosen and remove to cutting. Cut into wedges.

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