Tuna Casserole - cooking recipe

Ingredients

1 small onion, minced
1/4 c. chopped green peppers
1/2 c. chopped celery
3 Tbsp. salad oil
2 cans mushroom soup
1 c. water or milk
1/4 c. Parmesan cheese
2 Tbsp. parsley
1 Tbsp. lemon juice
1/4 tsp. margarine
1/4 tsp. thyme
1 can ripe olives
2 cans tuna
1 (8 oz.) pkg. spaghetti

Preparation

Cook onion, green pepper and celery in oil for 5 minutes.
Add remaining ingredients except spaghetti.
Simmer 20 minutes.
Mix with cooked spaghetti.