Fire up your oven to a cozy 350°F (175°C), and give your 1-quart casserole dish a good greasing.
Introduce a steamer to your saucepan world, adding water just shy of touching the steamer. Boil away! Let the squash and onion relax in there, covered, until perfectly tender and mash-ready, about 10-15 minutes.
In the casserole dish, blend egg and sour cream. Join the party by adding squash, onions, 2/3 of the cracker crumbs, and 2/3 of the Cheddar. A quick stir with a fork, and now, finish with the remaining cheese and crackers to create a delightful top layer.
Bake away in that preheated oven until the cheese has melted into gooey goodness and the crackers are a lovely golden hue, approximately 30 minutes of culinary bliss.
Recipe Video
Notes
Enhance your summer squash adventure by pairing it with a simple salad or some freshly grilled meats. This dish is a versatile and unforgettable addition to any meal.