Shop Our Brand New GreenPan Ranges Today. Combine first 5 ingredients and pour into greased 9x9 inch pan. Corn And Zucchini Casserole Mandy S Recipe Box Recipe Recipes Zucchini Casserole Recipes Food SQUASH CORNBREAD CASSEROLE. Jiffy squash casserole . The true secret to its long-term success can be found in the simple ingredient list. Scroll down for recipe and Happy Cooking yall. Cook and stir squash and onion in hot butter until tender 10 to 15 minutes. Saute until onion is almost translucent and squash is soft. Add butter and oil to pot on the stove. This is a throwback recipe that has been around for generations. Grease a 1-quart baking dish. Preheat oven to 350. Get Free Delivery on Orders Over 50. Preheat oven to 350 degrees F 175 degrees C. 1 box Jiffy corn muffin mix. Add half of squash mixture repeat. Msbrendadee hello everybody. Stir do not beat. In a bowl mix cooked squash cornbread onion. Three pounds of sliced yellow squash...