A close-up of a carrot zucchini casserole ready to be baked, topped with cheese and breadcrumbs.

Delicious Carrot Zucchini Casserole Recipe | Perfect for Dinner Parties

Casseroles are a comfort food classic, and this Carrot Zucchini Casserole is no exception. Bursting with the natural sweetness of carrots and the mild flavor of zucchini, this dish offers a refreshing departure from the usual cheese-laden casseroles. It’s elegant enough for a dinner party and simple enough for a weeknight meal.

The Best Carrot Zucchini Casserole Recipe

This carrot and zucchini casserole is an unusual yet delightful dish. Unlike typical casseroles that rely heavily on cream soups or cheese, this recipe highlights the vegetables’ natural flavors. The subtle kick from the horseradish and the crunch of the Italian bread crumbs make this casserole truly special.

Notes on Ingredients

  • Carrots and Zucchini: Fresh, sliced, and cooked until just tender.
  • Mayonnaise: Adds creaminess to the casserole without overpowering it.
  • Grated Onion: Provides a subtle, savory flavor.
  • Prepared Horseradish: Adds a mild heat and tanginess.
  • Italian Bread Crumbs and Butter: Create a crunchy, golden topping.

How to Make Carrot Zucchini Casserole

  1. Preparation: Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
  2. Cook the Vegetables: Boil the sliced carrots in salted water until just tender, then transfer to a bowl. Cook the zucchinis in the same water until tender, then add to the bowl with the carrots. Reserve 1/4 cup of the cooking liquid.
  3. Mix Ingredients: In a large bowl, combine mayonnaise, grated onion, horseradish, salt, and black pepper with the reserved cooking liquid. Mix in the cooked carrots and zucchinis.
  4. Assemble the Casserole: Pour the vegetable mixture into the prepared baking dish.
  5. Top with Bread Crumbs: Mix the Italian bread crumbs with melted butter and sprinkle over the vegetable mixture.
  6. Bake: Bake in the preheated oven for about 15 minutes, or until the bread crumbs are lightly browned.

How to Serve Carrot Zucchini Casserole

This casserole can be served as a main dish or a side. Pair it with a simple green salad or roasted chicken for a complete meal. Its vibrant colors and textures make it a visually appealing dish for any table setting.

How to Store Carrot Zucchini Casserole

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 350°F (175°C) until warmed through, or microwave individual servings.

Nutrition Information

Nutrition Information for Carrot Zucchini Casserole Recipe
Nutrition Information for Carrot Zucchini Casserole

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

FAQs About Carrot Zucchini Casserole

Can I use other vegetables in this casserole?

Absolutely! Feel free to add or substitute other vegetables like bell peppers, broccoli, or cauliflower.

Can I make this casserole ahead of time?

Yes, you can assemble the casserole up to a day in advance and bake it just before serving. Store it in the refrigerator until ready to bake.

Is this casserole suitable for vegetarians?

Yes, this Carrot Zucchini Casserole is vegetarian. Just ensure that the mayonnaise and bread crumbs you use are vegetarian-friendly.

A freshly baked carrot zucchini casserole in a baking dish.

The Best Carrot Zucchini Casserole Recipes

Discover the delightful and unusual flavor of our Carrot Zucchini Casserole. This easy-to-make recipe is a nice departure from traditional casseroles, perfect for dinner parties.
Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Course Casserole Dish, Main Course
Cuisine American
Servings 8 servings
Calories 204.64 kcal


  • 1 pound carrots sliced
  • 3 zucchinis sliced
  • ½ cup mayonnaise
  • 2 tablespoons grated onion
  • ¾ teaspoon prepared horseradish
  • ½ teaspoon salt
  • ½ teaspoon ground black pepper
  • ½ cup Italian bread crumbs
  • ¼ cup butter melted


  • Preheat the oven to 375 degrees F (190 degrees C). Lightly grease a 9×13-inch baking dish.
  • Place carrots into a medium pot and cover with salted water; bring to a boil. Reduce heat to medium-low and simmer until carrots are just tender, about 15 minutes. Use a slotted spoon to transfer carrots to a bowl. Add zucchinis to simmering water in the pot and cook until tender, 2 to 3 minutes. Transfer zucchinis to the bowl with carrots. Drain water from the pot, reserving about 1/4 cup cooking liquid.
  • Add mayonnaise, onion, horseradish, salt, and black pepper to a large bowl. Stir in reserved cooking liquid. Mix carrots and zucchinis into mayonnaise mixture until well combined; pour mixture into the prepared baking dish.
  • Mix bread crumbs and melted butter in a small bowl until combined; sprinkle over vegetable mixture.
  • Bake in the preheated oven until bread crumbs are lightly browned, about 15 minutes.
Keyword Carrots, Casserole, Vegetables, Zucchini
Carrot Zucchini Casserole recipe pin 2

This Carrot Zucchini Casserole is a delicious and versatile dish that’s perfect for any occasion. Its unique flavors and simple preparation make it a go-to recipe for both special gatherings and everyday dinners. Enjoy!

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