Keto Zucchini Casserole
This Keto Zucchini Casserole is a deliciously cheesy and buttery dish that highlights the best of low-carb zucchini. Perfect for family dinners or potlucks, this casserole combines simple ingredients to create a comforting meal that’s both satisfying and healthy. Whether you’re following a keto diet or just looking for a tasty way to enjoy vegetables, this recipe stands out with its rich flavors and easy preparation.
Why You’ll Love This Recipe
- Easy Preparation: This casserole requires minimal prep time and straightforward steps, making it perfect for busy weeknights.
- Rich Flavor: The combination of cheeses creates a creamy texture that complements the zucchini beautifully.
- Versatile Dish: Serve it as a main or side dish, making it suitable for any meal occasion.
- Low Carb Delight: Ideal for those on a keto or low-carb diet, allowing you to indulge without guilt.
- Gluten-Free Option: Made without gluten-containing ingredients, this recipe caters to various dietary needs.

Tools and Preparation
To make your Keto Zucchini Casserole, you’ll need some essential tools to ensure the process goes smoothly.
Essential Tools and Equipment
- 8” x 8” baking dish
- Cheesecloth or cotton kitchen towel
- Mixing bowl
- Measuring cups and spoons
- Oven
Importance of Each Tool
- Baking Dish: A good quality baking dish ensures even cooking and browning of the casserole.
- Cheesecloth: This tool helps remove excess moisture from the zucchini, which is crucial for achieving the right texture.
- Mixing Bowl: A spacious mixing bowl allows you to easily combine all ingredients without spilling.
Ingredients
This Keto Zucchini Casserole is cheesy, buttery, and packed with low carb zucchini!
For the Casserole
- 4 cups shredded zucchini (about 4 medium zucchini)
- 1/4 tsp salt
- 1/2 cup diced yellow onion
- 2 tbsp minced garlic
- 2 eggs (beaten)
- 1 cup shredded mozzarella cheese
- 1/2 cup shredded cheddar cheese
- 3/4 cup grated Parmesan cheese (divided)
- 1/2 cup crushed beef rinds or Parmesan cheese crisps
- 3 tbsp butter
How to Make Keto Zucchini Casserole
Step 1: Preheat the Oven
Preheat your oven to 375 F. Prepare an 8” x 8” baking dish by spraying it with non-stick cooking spray.
Step 2: Drain the Zucchini
Place half of the shredded zucchini in the center of a clean cheesecloth or cotton kitchen towel. Twist the cloth tightly to form a “pouch.” Over the sink, squeeze the pouch firmly to remove excess water from the shredded zucchini.
Step 3: Combine Ingredients
Add the drained zucchini into a mixing bowl. Repeat step two with the second half of the shredded zucchini. Then, mix in diced onion, minced garlic, beaten eggs, mozzarella cheese, cheddar cheese, and 1/2 cup of Parmesan cheese until everything is well combined.
Step 4: Bake Initial Layer
Transfer the mixture into your prepared baking dish and bake in the preheated oven for about 20 minutes.
Step 5: Prepare Topping Mixture
While the casserole is baking, melt butter in a small saucepan. In a separate bowl, combine crushed beef rinds (or Parmesan crisps), remaining Parmesan cheese (1/4 cup), and melted butter. Stir well to combine all ingredients.
Step 6: Add Topping & Finish Baking
After 20 minutes of baking, remove your casserole from the oven. Sprinkle your buttered topping evenly over the top. Return it to the oven for an additional 5-8 minutes until the topping is golden brown and crispy.
Step 7: Serve & Enjoy!
Once baked to perfection, serve your Keto Zucchini Casserole warm. Season with salt and pepper to taste before enjoying!
How to Serve Keto Zucchini Casserole
Serving Keto Zucchini Casserole can enhance your dining experience. Here are some creative ways to enjoy this cheesy and flavorful dish.
Pair with a Fresh Salad
- A simple green salad with mixed greens, cucumbers, and a light vinaigrette can offer a refreshing contrast to the rich casserole.
Serve with Grilled Chicken
- Grilled chicken breasts seasoned with herbs are a great protein addition that complements the flavors of the casserole.
Accompany with Garlic Bread
- For those not strictly adhering to keto, a slice of garlic bread can be a delightful addition, bringing warmth and crunch.
Add Sautéed Vegetables
- Sautéed bell peppers and broccoli add color and extra nutrients, making your meal more vibrant and healthy.
Enjoy as a Main Dish
- This casserole is hearty enough to serve as a main dish, especially when paired with a side of low-carb vegetables or salad.
How to Perfect Keto Zucchini Casserole
Creating the perfect Keto Zucchini Casserole is all about technique and ingredient quality. Here are some tips to ensure your dish turns out amazing every time.
- Use Fresh Zucchini: Opt for firm, fresh zucchini for better flavor and texture in your casserole.
- Drain Well: Make sure to squeeze out excess water from the zucchini. This prevents a soggy casserole.
- Experiment with Cheeses: Try different cheese blends for varied flavors; goat cheese or pepper jack can give an exciting twist.
- Add Herbs: Incorporate fresh herbs like basil or thyme for an aromatic touch that enhances the overall flavor profile.
- Adjust Seasoning: Taste the mixture before baking and adjust salt or spices according to your preference.
- Let it Rest: Allowing the casserole to sit for a few minutes after baking helps it set up nicely for serving.
Best Side Dishes for Keto Zucchini Casserole
Complementing your Keto Zucchini Casserole with the right side dishes can create a balanced meal. Here are some excellent options:
- Roasted Brussels Sprouts: Crispy and caramelized, these sprouts add depth and flavor alongside your casserole.
- Cauliflower Rice: A low-carb alternative that pairs well with any casserole while adding bulk to your meal.
- Avocado Salad: Creamy avocado slices mixed with tomatoes and lime juice provide freshness and healthy fats.
- Spinach Sauté: Lightly sautéed spinach with garlic makes for an easy yet nutritious side that’s quick to prepare.
- Stuffed Mushrooms: Fill mushrooms with cream cheese and herbs for a savory bite that complements the casserole’s richness.
- Zucchini Noodles: For an extra zucchini kick, spiralized noodles tossed in olive oil make a light accompaniment.
- Bacon-Wrapped Asparagus: This tasty treat adds crunch and smoky flavor that pairs beautifully with cheesy casseroles.
- Cabbage Slaw: A tangy slaw made from cabbage adds crunchiness and balances out the creamy nature of the zucchini dish.
Common Mistakes to Avoid
To make the best Keto Zucchini Casserole, it’s important to avoid common pitfalls. Here are some mistakes and tips to ensure your dish turns out perfectly.
- Ignoring moisture: Failing to remove excess moisture from the zucchini can lead to a watery casserole. Always use a cheesecloth or kitchen towel to squeeze out water after shredding.
- Overbaking the dish: Baking for too long can dry out your casserole. Keep an eye on it and aim for the recommended baking times for optimal texture.
- Not seasoning properly: Forgetting to add enough salt or spices can result in bland flavors. Taste your mixture before baking and adjust seasonings as needed.
- Using low-quality cheese: Cheeses with additives may not melt well, affecting texture and flavor. Opt for high-quality mozzarella and cheddar for the best results.
- Skipping the butter topping: The buttered topping adds a delicious crispiness that enhances the dish. Don’t skip this step; it’s essential for flavor!

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container in the fridge.
- Best consumed within 3-4 days for optimal freshness.
Freezing Keto Zucchini Casserole
- Wrap tightly in plastic wrap or aluminum foil before freezing.
- Can last up to 2 months in the freezer without losing quality.
Reheating Keto Zucchini Casserole
- Oven: Preheat oven to 350°F (175°C) and bake covered for about 15-20 minutes until heated through.
- Microwave: Heat on medium power for 2-3 minutes, stirring halfway through for even heating.
- Stovetop: Warm in a skillet over low heat, stirring occasionally until heated thoroughly.
Frequently Asked Questions
Here are some common questions about making this delicious Keto Zucchini Casserole.
Can I use other types of cheese in my Keto Zucchini Casserole?
Yes! You can substitute cheeses like gouda or pepper jack for a different flavor profile, but ensure they melt well.
How can I customize my Keto Zucchini Casserole?
Feel free to add cooked ground meat, sautéed vegetables, or herbs like basil or oregano for extra flavor and nutrition.
Is this Keto Zucchini Casserole gluten-free?
Absolutely! This recipe is naturally gluten-free, making it perfect for those following a gluten-free lifestyle.
What should I serve with my Keto Zucchini Casserole?
This casserole pairs well with grilled chicken, salads, or as a side dish at any meal. It’s versatile enough to complement many main dishes!
Final Thoughts
This Keto Zucchini Casserole is not just cheesy and buttery but also packed with low-carb goodness. Its versatility allows you to customize it based on your preferences while serving as a comforting side dish or a main course. Give it a try today and enjoy this delightful addition to your meal rotation!
Keto Zucchini Casserole
Keto Zucchini Casserole is a cheesy and buttery delight that showcases the best of low-carb zucchini. Perfect for family dinners or potlucks, this comforting dish features simple ingredients, making it easy to whip up on busy weeknights. Whether you’re following a keto diet or just want to enjoy more vegetables, this casserole stands out for its rich flavors and satisfying texture. With a golden, crispy topping and creamy interior, it’s sure to become a favorite in your meal rotation.
- Prep Time: 15 minutes
- Cook Time: 28 minutes
- Total Time: 43 minutes
- Yield: Serves 8
- Category: Main
- Method: Baking
- Cuisine: Keto
Ingredients
- 4 cups shredded zucchini
- 1/2 cup diced yellow onion
- 2 tbsp minced garlic
- 2 eggs
- 1 cup shredded mozzarella cheese
- 1/2 cup shredded cheddar cheese
- 3/4 cup grated Parmesan cheese (divided)
- 1/2 cup crushed pork rinds or Parmesan crisps
- 3 tbsp butter
Instructions
- Preheat oven to 375°F (190°C) and spray an 8” x 8” baking dish with non-stick spray.
- Drain shredded zucchini using a cheesecloth to remove excess moisture.
- In a mixing bowl, combine drained zucchini, onion, garlic, eggs, mozzarella, cheddar, and half the Parmesan.
- Transfer mixture to the baking dish and bake for 20 minutes.
- In a small saucepan, melt butter and mix with crushed pork rinds and remaining Parmesan.
- Top casserole with the mixture and bake for an additional 5-8 minutes until golden brown.
- Serve warm and enjoy!
Nutrition
- Serving Size: 1 serving
- Calories: 210
- Sugar: 3g
- Sodium: 350mg
- Fat: 16g
- Saturated Fat: 9g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 6g
- Fiber: 2g
- Protein: 12g
- Cholesterol: 120mg