Alright you Brutes, its been a while since I gave you somethin good to eat so here you go. I made this on Easter for a family get together and it turns out it was a hit. Its got a good helpin of squash and onions in there for the health conscious and a mess of cheese and sour cream to make it taste good. This recipe is good for a get together cause it feeds about 12. If you don't need that much just cut it in half. Good luck and Good Eatin!!!
Cook squash in boiling water to cover in a large skillet 8 to 10 minutes or just until tender. Drain well; gently press between paper towels.
Melt 2 tablespoons butter in skillet over medium-high heat; add onion and garlic, and sauté 5 to 6 minutes or until tender. Remove skillet from heat; stir in squash, 1 cup breadcrumbs, 3/4 cup Parmesan cheese, and next 7 ingredients. Spoon into a lightly greased 13- x 9-inch baking dish.
Melt remaining 2 tablespoons butter. Stir together melted butter, remaining 1 1/2 cups soft breadcrumbs, 1/2 cup Parmesan cheese, and garlic salt. Sprinkle mixture evenly over top of casserole.
Bake at 350° for 35 to 40 minutes or until set.