Cauliflower Casserole Recipes Vegetarian for Easy Meals

Updated On: October 7, 2025

If you’re looking for a hearty, comforting dish that’s both nutritious and vegetarian-friendly, cauliflower casserole recipes are an absolute must-try. Cauliflower, with its mild flavor and versatile texture, serves as the perfect canvas for a variety of flavors and ingredients.

Whether you’re a seasoned vegetarian or simply want to add more plant-based meals to your repertoire, cauliflower casseroles offer a satisfying, creamy, and cheesy delight that will please even the pickiest eaters.

In this post, we’ll explore several delicious vegetarian cauliflower casserole recipes that are easy to prepare and packed with wholesome ingredients. From cheesy bakes to creamy, herb-infused versions, you’ll discover how simple it is to turn humble cauliflower into a crowd-pleasing meal.

Plus, these casseroles make excellent leftovers and are perfect for family dinners, potlucks, or meal prep.

Why You’ll Love This Recipe

Cauliflower casseroles are a fantastic way to enjoy a vegetable-packed meal without sacrificing flavor or comfort. Here’s why these recipes will quickly become your favorites:

  • Nutritious and filling: Cauliflower is low in calories but high in fiber, vitamins, and antioxidants, making these casseroles a guilt-free indulgence.
  • Vegetarian and adaptable: Easily customize with your favorite cheeses, herbs, and additional veggies like spinach, mushrooms, or bell peppers.
  • Comfort food made healthy: Creamy, cheesy, and baked to golden perfection, these casseroles satisfy cravings while keeping things wholesome.
  • Great for meal prep: Prepare ahead of time and reheat for quick lunches or dinners during busy weeks.

Ingredients

  • 1 large head of cauliflower (about 1.5 pounds), cut into florets
  • 1 cup shredded cheddar cheese (or your favorite cheese blend)
  • 1/2 cup grated Parmesan cheese
  • 1 cup sour cream or Greek yogurt for a tangy twist
  • 1/2 cup mayonnaise (optional for creaminess)
  • 2 cloves garlic, minced
  • 1 small onion, finely chopped
  • 1/2 cup milk (dairy or plant-based)
  • 2 tablespoons butter
  • 1 teaspoon Dijon mustard
  • 1 teaspoon dried thyme or fresh if available
  • Salt and black pepper to taste
  • 1 cup breadcrumbs (preferably panko for extra crunch)
  • 2 tablespoons olive oil
  • Optional add-ins: chopped spinach, sautéed mushrooms, roasted bell peppers, or chopped walnuts

Equipment

  • Large pot for boiling or steaming cauliflower
  • Colander to drain cauliflower
  • Mixing bowls for combining ingredients
  • Skillet for sautéing onions and garlic
  • 9×13 inch baking dish or similar casserole dish
  • Measuring cups and spoons
  • Wooden spoon or spatula for mixing
  • Grater for cheese
  • Oven mitts for safe handling

Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease your casserole dish with butter or cooking spray.
  2. Prepare the cauliflower: Bring a large pot of salted water to a boil. Add the cauliflower florets and cook for 5 minutes until just tender but not mushy. Drain well in a colander and set aside.
  3. Sauté aromatics: In a skillet, melt butter over medium heat. Add the chopped onion and minced garlic, cooking until soft and fragrant, about 3-4 minutes.
  4. Mix the creamy base: In a large bowl, combine sour cream, mayonnaise (if using), milk, Dijon mustard, sautéed onion and garlic, dried thyme, salt, and pepper. Stir well to form a smooth sauce.
  5. Add cheeses: Fold in 3/4 cup of cheddar cheese and all of the Parmesan cheese. Reserve the remaining cheddar for topping.
  6. Combine cauliflower and sauce: Gently fold the cooked cauliflower into the creamy mixture until evenly coated. Add any optional add-ins here, such as spinach or mushrooms.
  7. Transfer to casserole dish: Spread the mixture evenly in your prepared baking dish.
  8. Prepare breadcrumb topping: In a small bowl, toss breadcrumbs with olive oil until lightly coated. Sprinkle evenly over the casserole, then top with reserved cheddar cheese.
  9. Bake: Place the casserole in the oven and bake for 25-30 minutes, or until the top is golden brown and bubbly.
  10. Rest and serve: Let the casserole cool for 5 minutes before serving. This helps it set and makes it easier to portion.

Tips & Variations

“For a gluten-free version, substitute the breadcrumbs with crushed gluten-free crackers or almond flour.”

  • Make it vegan: Use plant-based cheese, vegan sour cream, and dairy-free milk alternatives.
  • Add extra veggies: Toss in chopped broccoli, shredded carrots, or peas for a colorful twist.
  • Spice it up: Add a pinch of smoked paprika, cayenne, or chili flakes to the creamy sauce for subtle heat.
  • Make ahead: Assemble the casserole a day before, cover tightly, and refrigerate. Bake just before serving.
  • Use different cheeses: Gruyère, mozzarella, or feta can all add unique flavors and textures.

Nutrition Facts

Nutrient Amount per Serving
Calories 280 kcal
Protein 12 g
Fat 18 g
Carbohydrates 15 g
Fiber 5 g
Sugar 5 g
Calcium 250 mg
Vitamin C 60 mg

Serving Suggestions

This cauliflower casserole pairs beautifully with a fresh green salad dressed in a light vinaigrette or alongside a warm crusty bread to soak up every bit of the creamy sauce.

For a more substantial meal, serve it with a side of roasted sweet potatoes or steamed quinoa. If you’re interested in exploring more vegetarian and healthy recipes, check out our Lemon Ricotta Pasta With Arugula Recipe or our Harvest Hash Recipe: A Delicious and Easy Fall Comfort Food.

Delicious Cauliflower Casserole Variations

Cheesy Broccoli & Cauliflower Casserole

  • Substitute half of the cauliflower florets with chopped broccoli for a vibrant, nutrient-rich bake.
  • Add 1/2 teaspoon garlic powder for extra depth.
  • Top with crushed Ritz crackers instead of breadcrumbs for a buttery crunch.

Mediterranean Cauliflower Casserole

  • Add 1/2 cup chopped sun-dried tomatoes, 1/4 cup Kalamata olives, and 1/2 cup crumbled feta cheese to the cauliflower mix.
  • Replace thyme with 1 teaspoon dried oregano.
  • Use a lemon zest-infused breadcrumb topping for brightness.

Vegan Cauliflower & Cashew “Cheese” Casserole

  • Make a cashew cheese sauce by blending soaked cashews, nutritional yeast, lemon juice, garlic, and water until creamy.
  • Use plant-based milk and skip the breadcrumbs or use gluten-free alternatives.
  • Add sautéed mushrooms and kale for extra texture and nutrients.

Conclusion

Cauliflower casserole recipes offer an incredibly versatile and satisfying way to enjoy this nutritious vegetable. Whether you prefer a classic cheesy bake or a creative twist with Mediterranean flavors or vegan alternatives, these casseroles are sure to become staples in your meal rotation.

They are easy to prepare, comforting, and perfect for feeding a crowd or enjoying as leftovers. The creamy texture, combined with the subtle nuttiness of cauliflower and the delightful crisp topping, makes every bite a pleasure.

Don’t hesitate to experiment with different cheeses, herbs, and add-ins to create your personalized favorite version. For more inspiration on wholesome meals, explore our Low Fodmap Appetizer Recipes or the rich and flavorful Ground Pork And Mushroom Recipes.

Happy cooking!

📖 Recipe Card: Vegetarian Cauliflower Casserole

Description: A creamy and cheesy cauliflower casserole perfect for a comforting vegetarian meal. Easy to prepare and packed with flavor.

Prep Time: PT15M
Cook Time: PT35M
Total Time: PT50M

Servings: 6 servings

Ingredients

  • 1 large head of cauliflower, cut into florets
  • 2 tablespoons olive oil
  • 1 medium onion, finely chopped
  • 3 cloves garlic, minced
  • 1 cup shredded cheddar cheese
  • 1/2 cup grated Parmesan cheese
  • 1 cup sour cream
  • 1/2 cup milk
  • 1/4 cup all-purpose flour
  • 1 teaspoon dried thyme
  • Salt and pepper to taste
  • 1/2 cup breadcrumbs

Instructions

  1. Preheat oven to 375°F (190°C).
  2. Steam cauliflower florets until tender, about 8 minutes.
  3. Heat olive oil in a pan, sauté onion and garlic until soft.
  4. In a bowl, mix sour cream, milk, flour, thyme, salt, and pepper.
  5. Combine cauliflower, sautéed onion mixture, and cheese in a large bowl.
  6. Pour sour cream mixture over cauliflower and stir well.
  7. Transfer mixture to a greased casserole dish.
  8. Sprinkle breadcrumbs and Parmesan cheese on top.
  9. Bake for 30-35 minutes until golden and bubbly.
  10. Let cool for 5 minutes before serving.

Nutrition: Calories: 280 kcal | Protein: 12 g | Fat: 18 g | Carbs: 15 g

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Marta K

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