Hot Squash Casserole

Ingredients
l (10 1/2 oz.) pkg. frozen yellow squash or 3 c. fresh
1/2 med. green pepper, chopped
1 med. onion, chopped
1 (4-oz.) jar Cheese Whiz
Tortilla chips
1 (11-oz) jar Ro-Tel tomatoes

Directions
Cook vegetables until tender. Drain and mash. Add cheese and tomatoes. Place in 2-quart buttered casserole. Sprinkle broken tortilla chips on top. Bake at 350 degrees for about 25 minutes or until bubbly.