Easy Zucchini Casserole

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Redefining casserole.

When you think about traditional casseroles, what do yo picture? Slicing into a steaming concoction of macaroni, cheese, and butter? Digging your fork into a plate of chicken, its health benefits obscured by layers of cream? At Skinny Ms., we’ve turned our backs on traditional, unhealthy casseroles, and have embraced casseroles in their new form. Casseroles can be healthy, packed with veggies, and pulled together by delicious ingredients that add loads of flavor and delicious texture without packing in the fat and calories.

The star of this healthy casserole recipe is zucchini. Zucchini is essential for eaters who are watching their waistlines. It clocks in at just 17 calories per a 100 gram serving, making it a low calorie veggie that is also substantial enough to fill you up and satisfy you. We’ve rounded out this casserole with nothing but good decisions. Egg whites are used in place of whole eggs, reducing your fat and calorie intake. And whole wheat panko breadcrumbs supply a bit of texture and crunch, instead of the refined white breadcrumbs that do nothing to enhance a dish’s nutritional value.

This is a great dish to warm up a fall or winter weekend, so keep it on your calendar for the chilly months ahead. But try it out before summer ends, because zucchini is in season in the late summer, and fresh zucchini in this casserole will enhance its flavor and have you coming after seconds!

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Easy Zucchini Casserole

Here is a healthy and delicious casserole starring zucchini as the main ingredient.
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Yield 4 people
Serving Size
Course Dinner
Cuisine Universal
Author SkinnyMs.


  • 3 zucchini medium, sliced into 1/2-inch rounds
  • 2 egg whites
  • 1/2 red onion diced
  • 1 garlic clove crushed
  • 2 tablespoons extra virgin olive oil
  • 1/2 teaspoon kosher or sea salt
  • 1/2 teaspoon black pepper
  • 1 cup panko bread crumbs (whole-wheat were used in this recipe)
  • 1/2 cup parmesan cheese grated
  • 2 tablespoons basil freshly chopped, plus more for garnish


  • Preheat oven to 375 degrees F.
  • Using a double boiler, steam zucchini for 5 minutes.
  • In a mixing bowl, use a hand blender to cream the zucchini. Then using a beater, add the egg whites, onion, garlic, extra virgin olive oil, salt and pepper. Spread mixture in an 8-inch casserole pan.
  • Combine the remaining 1 tablespoon oil with the panko bread crumbs. Sprinkle casserole with panko and cheese, cover loosely with foil and bake 35 minutes. Remove foil and bake 7 additional minutes. If desired, sprinkle with additional basil before serving.

Nutrition Information

Calories: 205kcal | Carbohydrates: 18g | Protein: 9g | Fat: 11g | Saturated Fat: 3g | Cholesterol: 10mg | Sodium: 565mg | Fiber: 2g | Sugar: 5g |
SmartPoints (Freestyle): 7
Keywords Budget-Friendly, Low-Carb, Vegetarian

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More Easy Zucchini Recipes:

Zucchini Blondies

Parmesan Zucchini

Zucchini Noodles with Creamy Red Pepper Sauce

Zucchini Ribbon Salad With Pine Nuts and Parmesan Shavings

Baked Zucchini Fritters

Oven Baked Zucchini Chips

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The SkinnyMs. team believes that all people, regardless of age, size, and fitness level, have the power to transform their lives — they just need the resources to do so. The SkinnyMs. method promotes healthy living through a combination of clean eating and regular exercise. We offer everything you need to be successful.

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