Calico Squash Casserole

Ingredients

• 1 lb. yellow squash, sliced
• 1/2 lb. zucchini, sliced
• 1 c. water
• 1/2 c. chopped onion
• 1/4 c. chopped green pepper
• 3 Tbsp. chopped green onion
• 1/4 c. margarine, melted and divided
• 1 c. herb stuffing mix
• 1 c. cream of chicken soup
• 1 (8 oz.) can water chestnuts
• 1/2 c. plain low-fat yogurt
• 1/2 c. chopped pimento
• 1 Tbsp. margarine
• 1 large carrot, grated
• 1/4 tsp. pepper
• 1/2 tsp. salt