Tex-Mex Keto Squash Casserole
Cheesy, creamy, and low carb, Tex-Mex Keto Squash Casserole is the perfect side dish for any occasion. This delightful casserole combines the fresh taste of summer squash with zesty flavors, making it a hit at family dinners, potlucks, or casual weeknight meals. The rich blend of cheese and creamy ingredients ensures that every bite is satisfying while keeping it keto-friendly.
Why You’ll Love This Recipe
- Easy to Prepare: With minimal prep time and straightforward steps, this casserole can be made quickly even on busy days.
- Flavor Packed: The combination of cheddar cheese and rotel tomatoes gives this dish a savory kick that everyone will enjoy.
- Versatile Side Dish: It pairs well with various main courses such as grilled meats, tacos, or can even be enjoyed on its own.
- Low Carb Delight: Perfect for those following a keto diet, this dish keeps the carb count low without sacrificing taste.
- Family-Friendly: Kids and adults alike love the cheesy goodness, making it a great way to sneak in some veggies.

Tools and Preparation
Having the right tools makes preparing your Tex-Mex Keto Squash Casserole simple and efficient. Gather these essential kitchen items before you start cooking.
Essential Tools and Equipment
- Large skillet
- Medium-sized casserole dish
- Mixing bowl
- Cutting board
- Knife
Importance of Each Tool
- Large skillet: Ideal for sautéing vegetables evenly and preventing them from becoming soggy.
- Medium-sized casserole dish: Ensures even baking and allows enough space for all ingredients to meld together perfectly.
Ingredients
Cheesy, creamy, and low carb squash casserole makes the perfect side dish.
For the Base
- 1 tsp olive oil
- 2 pounds summer squash, sliced
- 1 cup diced onion
For Flavor
- 1 can rotel tomatoes, drained (may use mild if desired)
- ½ cup sour cream
- ½ cup mayonnaise
For Cheese Topping
- 1 ½ cups cheddar cheese, grated (reserve ½ cup for topping)
- ¼ tsp salt
- ¼ tsp black pepper
How to Make Tex-Mex Keto Squash Casserole
Step 1: Preheat the Oven
Preheat your oven to 350 degrees Fahrenheit. This step is crucial for ensuring your casserole bakes evenly.
Step 2: Sauté Vegetables
- Heat olive oil in a large skillet over medium heat.
- Add sliced summer squash and diced onion to the skillet.
- Cook while stirring occasionally until tender—about 8-10 minutes.
- Drain any excess liquid from the cooked squash mixture.
Step 3: Mix Ingredients
- In a large mixing bowl, combine the drained squash-onion mixture with remaining ingredients (reserving ½ cup of cheese).
- Stir well to ensure everything is mixed thoroughly.
- Adjust salt and pepper to taste.
Step 4: Assemble the Casserole
- Pour the mixture into a medium-sized casserole dish.
- Sprinkle the reserved cheese evenly on top.
Step 5: Bake
Bake in your preheated oven until the cheese is melted and bubbly—around 20-30 minutes.
Allow the casserole to set for about 5-10 minutes before serving to enhance flavor and texture.
This Tex-Mex Keto Squash Casserole is sure to become a staple in your home! Enjoy it as an impressive side dish or a comforting main course any day of the week!
How to Serve Tex-Mex Keto Squash Casserole
Tex-Mex Keto Squash Casserole is a versatile dish that can be enjoyed in various ways. Whether you serve it as a main course or a side, there are plenty of options to enhance your meal.
As a Main Dish
- Pair with grilled chicken for a hearty meal.
- Add a fresh salad on the side for a refreshing crunch.
With Toppings
- Serve with avocado slices for creaminess.
- Top with chopped cilantro for added flavor.
With Dips
- Accompany with salsa for a zesty kick.
- Offer sour cream on the side to balance the spice.
How to Perfect Tex-Mex Keto Squash Casserole
To make your Tex-Mex Keto Squash Casserole truly shine, consider these helpful tips that ensure delicious results every time.
- Use Fresh Ingredients: Fresh summer squash and quality cheese enhance flavor and texture.
- Drain Excess Liquid: Properly drain the squash to avoid a watery casserole.
- Adjust Cheese Variety: Experiment with different cheeses like pepper jack for extra spice.
- Add Protein: Mix in cooked ground beef or turkey for a heartier meal.
- Season Boldly: Don’t hesitate to add more spices like cumin or chili powder for depth.
- Let It Rest: Allowing the casserole to set before serving helps it firm up.
Best Side Dishes for Tex-Mex Keto Squash Casserole
When looking for side dishes that complement Tex-Mex Keto Squash Casserole, consider these tasty options. Each suggestion pairs well and adds variety to your meal.
- Guacamole – Creamy avocado dip that adds richness and complements the casserole’s flavors.
- Mexican Cauliflower Rice – A low-carb alternative that provides texture and absorbs flavors from the casserole.
- Zucchini Noodles – Light and healthy, they offer a great way to increase vegetable intake without added carbs.
- Spicy Black Beans – A protein-packed option that contrasts nicely with the cheesy casserole.
- Cilantro Lime Rice – Fresh and zesty, this rice dish enhances the overall taste experience.
- Grilled Vegetables – Seasonal veggies grilled to perfection bring smokiness and color to your plate.
- Garden Salad – Crisp greens topped with tomatoes and cucumbers provide freshness and crunch.
- Corn on the Cob – Sweet corn complements savory flavors while adding sweetness and texture.
Common Mistakes to Avoid
When making your Tex-Mex Keto Squash Casserole, it’s easy to run into a few common pitfalls. Here’s how to avoid them.
- Using too much liquid: Excess moisture can make your casserole watery. Always drain the squash thoroughly to ensure a perfect texture.
- Skipping the cheese topping: The cheese adds an irresistible crust. Don’t forget to reserve some for the top before baking.
- Overcooking the squash: Cooking squash for too long can lead to mushiness. Aim for 8-10 minutes until just tender.
- Neglecting seasoning: Under-seasoned dishes can be bland. Taste and adjust salt and pepper in the mixture for maximum flavor.
- Not letting it rest: Cutting into the casserole immediately can result in a messy serving. Allow it to set for 5-10 minutes after baking.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftovers in an airtight container.
- Enjoy within 3-5 days for optimal freshness.
Freezing Tex-Mex Keto Squash Casserole
- Place in a freezer-safe container or wrap tightly with foil.
- Can be frozen for up to 2 months.
Reheating Tex-Mex Keto Squash Casserole
- Oven: Preheat to 350°F and bake for about 20 minutes until heated through.
- Microwave: Heat in short increments, stirring in between, until hot.
- Stovetop: Heat gently over medium-low heat, stirring occasionally until warmed.
Frequently Asked Questions
Here are some common questions about Tex-Mex Keto Squash Casserole that you might find helpful.
What is Tex-Mex Keto Squash Casserole?
Tex-Mex Keto Squash Casserole is a low-carb dish featuring summer squash, cheese, and zesty flavors, making it a delightful side dish.
Can I customize the ingredients in the casserole?
Absolutely! You can add different vegetables or spices according to your taste preferences while keeping it keto-friendly.
How do I know when my casserole is done?
The casserole is ready when the cheese is melted and bubbly and has a golden-brown crust on top.
Is this recipe suitable for meal prep?
Yes! This dish stores well and can be made ahead of time, making it perfect for meal prepping.
Final Thoughts
Tex-Mex Keto Squash Casserole is not only cheesy and creamy but also versatile enough to suit various palates. Feel free to customize it with your favorite ingredients or spices. Give this recipe a try; your family will love it!
Tex-Mex Keto Squash Casserole
Tex-Mex Keto Squash Casserole is a deliciously cheesy and creamy dish that takes summer squash to new heights. This low-carb casserole features the vibrant flavors of Tex-Mex cuisine, making it an ideal side for family dinners, potlucks, or casual weeknight meals. With its rich blend of cheddar cheese and zesty ingredients like Ro*Tel tomatoes, every bite is satisfying without compromising your keto diet. Easy to prepare and packed with flavor, this dish is sure to become a favorite in your household.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: Serves 8
- Category: Side Dish
- Method: Baking
- Cuisine: Tex-Mex
Ingredients
- 2 pounds summer squash, sliced
- 1 cup diced onion
- 1 can Ro*Tel tomatoes (drained)
- ½ cup sour cream
- ½ cup mayonnaise
- 1 ½ cups cheddar cheese (divided)
- 1 tsp olive oil
- ¼ tsp salt
- ¼ tsp black pepper
Instructions
- Preheat oven to 350°F.
- Heat olive oil in a large skillet over medium heat. Sauté sliced squash and diced onion for about 8-10 minutes until tender; drain excess liquid.
- In a mixing bowl, combine the drained mixture with Ro*Tel tomatoes, sour cream, mayonnaise, salt, pepper, and 1 cup of cheddar cheese; mix well.
- Pour into a casserole dish and top with the remaining cheese.
- Bake for 20-30 minutes until bubbly. Let rest for 5-10 minutes before serving.
Nutrition
- Serving Size: 1/8 of casserole (approx. 150g)
- Calories: 250
- Sugar: 3g
- Sodium: 400mg
- Fat: 18g
- Saturated Fat: 7g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 8g
- Fiber: 2g
- Protein: 9g
- Cholesterol: 40mg