Loaded Zucchini Casserole

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This rich and creamy zucchini casserole is packed with tender zucchini and bits of bacon smothered in a savory cheese sauce. Be sure to press the zucchini slices dry with paper towels to soak up extra water to prevent the casserole from becoming watery once it’s baked.

a recipe photo of the Loaded Zucchini Casserole
Photo:

Photographer: Stacy k. Allen, Props: Christina Brockman, Food Stylist: Jennifer Wendorf

Active Time:
25 mins
Total Time:
40 mins
Servings:
6
Nutrition Profile:
the ingredients to make the Loaded Zucchini Casserole

Photographer: Stacy k. Allen, Props: Christina Brockman, Food Stylist: Jennifer Wendorf

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Ingredients

  • 1 tablespoon extra-virgin olive oil

  • 4 medium zucchini, thinly sliced (about 7 cups)

  • 1 tablespoon unsalted butter

  • 1 1/2 tablespoons all-purpose flour

  • 3/4 cup whole milk

  • 2 tablespoons reduced-fat sour cream

  • 1 1/2 cups shredded sharp Cheddar cheese, divided

  • 1 teaspoon Italian seasoning

  • 1/2 teaspoon garlic powder

  • 1/4 teaspoon smoked paprika

  • 1/4 teaspoon ground pepper

  • 1/4 teaspoon salt

  • 1 large egg, beaten

  • 1/2 cup cooked and finely crumbled bacon (3 slices), divided

  • 2 tablespoons thinly sliced scallions

Directions

  1. Preheat oven to 350°F. Lightly coat an 8-inch-square baking dish with cooking spray.

  2. Heat oil in a large nonstick skillet over medium heat. Add zucchini; cook, stirring occasionally, until very soft, about 15 minutes. Transfer to a colander; let drain for 5 minutes to drain. Press dry with paper towels.

    a photo of the cooked zucchini in a colander

    Photographer: Stacy k. Allen, Props: Christina Brockman, Food Stylist: Jennifer Wendorf

  3. Melt butter in a medium saucepan over medium heat. Add flour; cook, whisking constantly, until thickened into a paste, about 15 seconds. Slowly whisk in milk and sour cream, about 1 tablespoon at a time, until combined and smooth. Cook over medium-high heat, whisking often, until bubbling around the edges, about 1 minute. Stir in 1 cup Cheddar, Italian seasoning, garlic powder, smoked paprika, pepper and salt; cook, stirring, until smooth, about 1 minute. Remove from heat. Whisk in egg until combined.

    a photo of the sauce being made in a pot

    Photographer: Stacy k. Allen, Props: Christina Brockman, Food Stylist: Jennifer Wendorf

  4. Transfer the zucchini to the prepared baking dish. Pour the cheese sauce over the zucchini; sprinkle with 1/4 cup bacon and the remaining 1/2 cup Cheddar.

    a photo of the sauce poured over the zucchini

    Photographer: Stacy k. Allen, Props: Christina Brockman, Food Stylist: Jennifer Wendorf

  5. Bake until the cheese is melted and bubbling, about 10 minutes. Sprinkle with scallions and the remaining 1/4 cup bacon. Let stand for 5 minutes before serving.

Frequently Asked Questions

  • Is zucchini casserole healthy?

    Yes, this casserole offers plenty of nutrition. Zucchini is a low-carb vegetable that provides fiber, vitamin C, potassium, magnesium and folate. It’s also loaded with antioxidants that protect your skin, heart, eyes and bones. The cheese and milk come together for a luscious, yet healthy, sauce that provides protein, calcium and other vitamins and minerals. The cheese even provides probiotics for a healthy gut. While it doesn’t add much nutrition, the bacon adds a flavor profile only bacon can provide. If you want to reduce the calories and fat in this casserole, simply reduce the amount of bacon (you don’t need much to get the flavor of it) or leave it out.

  • What should I serve with zucchini casserole?

    Casseroles like this are perfect for when you’re hosting cookouts or potlucks. They’re convenient and substantial. To round out the meal, put something on the grill: steak, chicken, pork, seafood or tofu would all work well. If it’s not a day or season for grilling, simply forgo the grill and cook in the oven. Add a tossed salad and a basket of fresh bread and rolls, and you’re basically done—especially if guests are bringing dessert.

  • Can I make this casserole ahead of time?

    Absolutely. Preparing the entire dish and baking it the following day is convenient and also helps the ingredients integrate for a more flavorful casserole. Keep the unbaked casserole in the refrigerator covered in foil. Putting a cold casserole into a hot oven can cause problems, even if you are using oven-safe pans, so about an hour before you plan to cook the casserole, set it out on a countertop to get it to room temperature. If you have leftovers, they should keep well in an airtight container in the fridge for about three to four days. This is one casserole we would not recommend freezing.

  • Why is my zucchini casserole watery?

    Zucchini, like other refreshing summer veggies, is packed with water. If your casserole is watery, chances are you didn’t dry the zucchini enough before combining it with the other ingredients. To keep it from weeping water into your finished dish, make sure to drain the cooked zucchini in a colander and then press dry with paper towels. Your goal is to remove as much moisture as possible before adding the zucchini to the other ingredients.

Additional reporting by Carrie Myers, M.S. and Linda Frahm

EatingWell.com, May 2024

Nutrition Facts (per serving)

245 Calories
18g Fat
8g Carbs
13g Protein
Nutrition Facts
Servings Per Recipe 6
Serving Size 3/4 cup
Calories 245
% Daily Value *
Total Carbohydrate 8g 3%
Dietary Fiber 2g 6%
Total Sugars 4g
Protein 13g 25%
Total Fat 18g 24%
Saturated Fat 9g 44%
Cholesterol 74mg 25%
Vitamin A 221µg
Vitamin C 18mg 20%
Vitamin D 1µg
Vitamin E 1mg 6%
Folate 56µg
Vitamin K 13µg
Sodium 402mg 17%
Calcium 276mg 21%
Iron 1mg 6%
Magnesium 41mg 10%
Potassium 480mg 10%
Zinc 2mg 17%
Vitamin B12 1µg
Omega 3 0g

Nutrition information is calculated by a registered dietitian using an ingredient database but should be considered an estimate.

* Daily Values (DVs) are the recommended amounts of nutrients to consume each day. Percent Daily Value (%DV) found on nutrition labels tells you how much a serving of a particular food or recipe contributes to each of those total recommended amounts. Per the Food and Drug Administration (FDA), the daily value is based on a standard 2,000 calorie diet. Depending on your calorie needs or if you have a health condition, you may need more or less of particular nutrients. (For example, it’s recommended that people following a heart-healthy diet eat less sodium on a daily basis compared to those following a standard diet.)

(-) Information is not currently available for this nutrient. If you are following a special diet for medical reasons, be sure to consult with your primary care provider or a registered dietitian to better understand your personal nutrition needs.

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