Step 1

Preheat oven at 350 degrees.

Step 2

Cook the ground meat in a little oil in a large pan stirring often. Drain fat.

Step 3

Add onions, garlic, spaghetti sauce, stewed tomatoes, & undrained mushrooms. Mix well.

Step 4

Simmer 20 mins or until onions are soft.

Step 5

Cook pasta according to package directons. Drain & rinse with cold water.

Step 6

Pour 1/2 of the shells in deep casserole.

Step 7

Cover with 1/2 meat sauce mixture. Top with provolone.

Step 8

Repeat & end with mozzarella.

Step 9

Cover casserole & bake at 350 for 35-40 min.

Step 10

Remove cover & continue baking until mozzarella melts & browns slightly, about 5 mins more.

Step 11

Serve.