Summer Squash Mess

Prep: 20 min Cook: 30 min Serves: 6 Cuisine: American

A hearty summer vegetable casserole featuring tender squash, mushrooms, and tomatoes topped with cheesy crumbs, perfect for a comforting family dinner or seasonal gathering.

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Ingredients

  • 4 summer squash
  • 1 lb. mushrooms
  • 1 large onion
  • 3 Tbsp. butter
  • 16 oz. can tomatoes
  • 1/4 cup Parmesan cheese
  • buttered bread crumbs

Instructions

  1. Peel and slice the summer squash.
  2. Parboil the sliced squash for 15 minutes, then drain.
  3. Slice the onion and mushrooms.
  4. Saute the onion and mushrooms in butter until limp.
  5. Add the canned tomatoes and Parmesan cheese to the sauteed vegetables.
  6. Combine all cooked ingredients with the parboiled squash.
  7. Transfer the mixture into a 9 x 13-inch pan.
  8. Top with buttered bread crumbs.
  9. Bake at 350°F for about 30 minutes until golden and bubbly.

Tips & Substitutions

For a more flavorful dish, consider adding garlic or fresh herbs like basil or thyme to the sautéed mushrooms and onions. If you don't have Parmesan cheese, a mix of mozzarella and cheddar can work well for a different flavor profile. You can also substitute zucchini for summer squash for a slightly different texture. Remember to adjust cooking times accordingly based on the vegetables used.

Serving Suggestions

This Summer Squash Mess pairs beautifully with a crisp green salad or crusty bread for a complete meal. For a heartier option, consider serving it alongside grilled chicken or fish. It also makes a great side dish for summer barbecues. Leftovers can be enjoyed for lunch the next day or served over pasta for a quick meal.

Storage & Reheating

To store leftovers, allow the dish to cool completely, then cover tightly with plastic wrap or transfer to an airtight container. It can be refrigerated for up to 3 days. To reheat, place in a preheated oven at 350°F for about 20 minutes or until heated through, ensuring the topping stays crispy.

Nutrition & Diet Analysis (per serving)

Each serving of Summer Squash Mess contains roughly 119 calories, with 6g protein, 15g carbohydrates, and 4g fat. It is an excellent source of vitamin C (30% of the Daily Value), and a good source of protein and vitamin D.

119 kcal 6% DV
Protein Fat Carbs

Macronutrients

Protein 6.1g 12% DV
Total Fat 3.9g 5% DV
Carbs 15.4g 6% DV
Fiber 2.4g 9% DV
Sugar 4.5g 9% DV

Electrolytes

Sodium 394.9mg 17% DV
Potassium 338.9mg 7% DV
Cholesterol 4.5mg 2% DV

Vitamins & Minerals

Vitamin A 59mcg 7% DV
Vitamin C 27.1mg 30% DV
Vitamin D 2mcg 10% DV
Calcium 104.1mg 8% DV
Iron 1.3mg 7% DV
Diet fit Low-carb Under 400 cal Low-fat
Contains Milk Wheat/Gluten

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use frozen summer squash for this recipe?

While fresh summer squash is preferred for its texture, you can use frozen summer squash. Just be sure to thaw and drain it well to avoid excess moisture in the dish. You may need to adjust the cooking time slightly since frozen squash can be softer.

Is it possible to make this dish vegan?

Yes, you can easily make this recipe vegan by substituting the butter with olive oil or vegan butter and using a dairy-free cheese alternative in place of Parmesan. This will maintain a similar flavor while keeping the dish plant-based.

What other vegetables can I add to this dish?

You can customize this dish by adding other vegetables such as bell peppers, zucchini, or even spinach. Just make sure to adjust the cooking times accordingly to ensure all vegetables are cooked through but still retain some texture.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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