Pasta Sauce

Ingredients

• 2 Tbsp. olive oil
• 2 Tbsp. butter
• 1 medium onion, sliced
• 1 to 2 stalks celery, chopped
• 1 green pepper, sliced
• 1/2 lb. fresh mushrooms, sliced
• 3 large green olives, chopped
• 1 (6 oz.) can tomato paste, with 2 c. water*
• 2 Tbsp. parsley, snipped
• 1/2 to 1 tsp. salt
• dash of pepper
• 1 bay leaf
• 1 tsp. dried oregano