oniony tuna casserole

Ingredients

• 2 cans tuna fish, undrained
• 2 cans condensed cream of onion soup
• 2 cups cooked pasta, of choice
• 1 can sliced mushrooms, undrained
• 2 tablespoons lemon juice
• 1/4 teaspoon ground thyme
• 1/4 teaspoon salt
• 1/2 teaspoon pepper
• 1 can french fried onion rings