Created by Judeka on August 11, 2013
Step 1: Preheat oven to 350°.
Step 2: Bring first 2 ingredients and water to cover to a boil in a Dutch oven over medium-high heat, and boil 5 minutes or until crisp-tender. Drain; gently press between paper towels.
Step 3: Melt 2 tablespoons of butter in a skillet over medium-high heat; add onion, and sauté 10 minutes or until tender. Add garlic, and sauté 2 minutes.
Step 4: Stir together squash, onion mixture, corn, next 6 ingredients, and 1/2 cup each breadcrumbs and Asiago cheese just until blended.
Step 5: Spoon mixture into a lightly greased 13- x 9-inch baking dish.
Step 6: Melt remaining 2 tablespoons butter. Stir in remaining 1 cup breadcrumbs and 1/2 cup Asiago cheese. Sprinkle over casserole.
Step 7: Bake at 350° for 45 to 50 minutes or until golden brown and set. Let stand 15 minutes before serving.