Healthy Vegetable Casserole

(5.0)
By Judy Capodanno
Updated 4/8/2025
Dietitian Reviewed: Jane Schwartz, RDN, CLT
Approved for These Diets:
Heart Healthy | Low Sodium | Gluten Free | Diabetic | Vegetarian
Healthy Vegetable Casserole
Photo Credit: Baldwin Publishing Staff Photographer

This healthy vegetable casserole is one of our most popular healthy casserole recipes. Use any vegetables you have to make this easy veggie casserole healthy. We use high fiber squash and eggplant for a diabetic-friendly casserole, and we add tomatoes and mushrooms to the mix to bulk it up for a heart healthy meal.  With only 36 mg of sodium, healthy vegetable casseroles like this should be part of your low sodium diet plan. At just 50 calories a serving, it’s also a great low-calorie casserole recipe.

Check out more heart healthy casserole recipes.

Total Time
60 minutes
Servings
6
Calories
54
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Why is this a healthy casserole recipe for veggies?

When you need a healthy veggie casserole side dish for a crowd or a vegetarian dinner idea for the family, this healthy mixed vegetable casserole will become your go-to recipe. 

It’s flexible! Use whatever veggies you have. They all are good for your heart. Make sure to add an onion for flavor. Tomatoes will keep the casserole moist while it cooks.

This is a no salt recipe so it’s heart healthy. To make this a low sodium dinner casserole, we layered and seasoned the veggies with fresh herbs and spices, then sprinkled with balsamic vinegar.  

And it’s a low calorie dinner recipe. Use lots of vegetables to make it high fiber and filling. Lightly top with Parmesan to bring out the best in the veggies of the season. 

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Ingredients

Recipe yields 6 servings

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How to Make Mixed Vegetable Casserole

  1. Step 1

    Preheat oven to 375°.

  2. Step 2

    In a large bowl, combine eggplant, yellow squash, zucchini, onion, garlic, mushroom caps and tomato. Add olive oil, balsamic vinegar, basil, thyme, marjoram and pepper, and toss vegetables to coat evenly.

  3. Step 3

    Transfer vegetables to a casserole dish and bake, uncovered, for 40 minutes.

  4. Step 4

    Sprinkle with Parmesan cheese and serve warm.

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Nutrition Facts

Serving Size:
1 cup

54
Calories
3
g
Fat
1
mg
Cholesterol
36
mg
Sodium
6
g
Carbs
1
g
Sat. Fat
3
g
Fiber
2
g
Protein
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