For an extra layer of flavor, try sautéing the onions in a tablespoon of butter before steaming. Feel free to substitute other types of cheese, such as Gruyere or Monterey Jack, for a different flavor profile. If you don't have a steamer, you can boil the squash and onions until tender, but be sure to drain them well to avoid a watery casserole. Add a pinch of nutmeg to the sour cream mixture for added warmth.
Mama's Summer Squash Casserole
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PREP TIME20 mins
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COOK TIME40 mins
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TOTAL TIME1 hrs
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SERVING6 People
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VIEWS325
Embrace the warmth of summer with this comforting squash casserole, a symphony of tender squash, sweet onion, and sharp cheddar, crowned with a buttery, golden cracker crust. A delightful dish perfect for any occasion.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate25 g
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Cholesterol86 mg
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Fiber6 g
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Protein15 g
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Saturated Fat12 g
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Sodium439 mg
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Sugar2 g
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Fat24 g
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Unsaturated Fat0 g
DIRECTIONS
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01 Step
Recipe View 5 mins Preheat oven to 350 degrees F (175 degrees C). Grease a 1-quart casserole dish. (5 minutes)
02 Step
Recipe View 20 mins Place a steamer insert into a saucepan and fill with water to just below the bottom of the steamer. Bring water to a boil. Add squash and onion, cover, and steam until squash is tender and easily mashed with a fork, 10 to 15 minutes. (20 minutes)
03 Step
Recipe View 10 mins Whisk egg and sour cream together in the prepared casserole dish; add squash, onions, 2/3 the crackers, and 2/3 the Cheddar cheese. Stir with a fork. Cover the squash mixture with remaining Cheddar cheese and crackers. (10 minutes)
04 Step
Recipe View 35 mins Bake in the preheated oven until cheese is melted and crackers are lightly browned, about 30 minutes. Let stand for 5 minutes before serving. (35 minutes)
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Clemens Effertz
Jun 27, 2025I added a little garlic powder to the squash while steaming and it was delicious!
Theo Hamill
Apr 29, 2025The cracker topping is the perfect touch! This is definitely going into my regular rotation.
Roy Shields
Oct 21, 2024I used Greek yogurt instead of sour cream and it turned out great! A little tangier, but still creamy and delicious.
Eleanore Hickle
Feb 1, 2024This recipe is amazing! My family loved it, and it was so easy to make.