1 (10 oz.) pkg. refrigerated pizza dough
1 (6 1/2 oz.) can tuna
1 (8 oz.) pkg. shredded cheese
1 (8 oz.) can pizza sauce
1 (2 1/2 oz.) jar sliced mushrooms
1 (2.8 oz.) can French fried onions

Unroll pizza dough onto greased baking pan. Sprinkle 1/2 of cheese over dough. Spread sauce over cheese. Arrange tuna over sauce. Drain mushrooms spread out over drained tuna. Sprinkle with rest of cheese. Bake for 15 minutes. Remove from oven and sprinkle with onions. Return to oven and bake for 3-5 minutes more.