Spinach Stuffed Manicotti - cooking recipe

Ingredients

1 pkg. frozen spinach, thawed
1 (16 oz.) Ricotta cheese
10 shells manicotti (already cooked)
1 (16 oz.) jar spaghetti sauce
1/2 c. sliced mushrooms
1/2 c. sliced onion
1 c. Mozzarella cheese
1/2 c. diced green pepper
1/2 c. black olives
pinch of oregano
1 Tbsp. garlic powder or to taste

Preparation

Drain spinach and mix in large bowl with Ricotta.
Set aside. Combine spaghetti sauce, mushrooms, onion, black olives and green pepper in a medium saucepan.
Simmer 10 minutes.
Then add oregano and garlic; continue simmering.
Stuff manicotti shells with spinach/Ricotta mixture.