Keto Taco Casserole Cheesy

Featured in: Easy Weeknight Meals

This dish combines seasoned ground beef with riced cauliflower to create a satisfying low-carb main. Mixed with diced tomatoes, bell peppers, and aromatic spices, it is topped with a blend of cheddar and Monterey Jack cheeses. Baked until bubbly and golden, it delivers rich Tex-Mex flavors with a creamy finish, perfect for those seeking a flavorful yet keto-friendly meal.

Updated on Sat, 14 Feb 2026 09:11:23 GMT
Keto taco casserole with cheesy topping and cauliflower rice, baked golden and bubbling in a 9x13-inch dish. Save
Keto taco casserole with cheesy topping and cauliflower rice, baked golden and bubbling in a 9x13-inch dish. | olivedune.com

Indulge in the bold, festive flavors of Tex-Mex without the high carb count. This Keto Taco Casserole with Cheesy Topping and Cauliflower Rice is a hearty, low-carb solution for satisfying taco cravings, featuring perfectly seasoned ground beef and a golden, bubbling layer of melted cheese.

Keto taco casserole with cheesy topping and cauliflower rice, baked golden and bubbling in a 9x13-inch dish. Save
Keto taco casserole with cheesy topping and cauliflower rice, baked golden and bubbling in a 9x13-inch dish. | olivedune.com

The clever use of riced cauliflower adds bulk and nutrients while absorbing the savory juices of the meat and spices. This recipe transforms simple ingredients into a comforting bake that ensures no one misses the tortillas or the rice.

Ingredients

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  • Meat & Protein: 1 lb (450 g) ground beef (85% lean), 1 tbsp olive oil
  • Vegetables: 1 medium onion (finely chopped), 2 cloves garlic (minced), 1 bell pepper (red or green, diced), 3 cups (350 g) riced cauliflower, 1 (10 oz/280 g) can diced tomatoes with green chilies (drained)
  • Seasonings: 2 tbsp taco seasoning (sugar-free), ½ tsp salt, ¼ tsp black pepper
  • Dairy: 1 cup (110 g) shredded cheddar cheese, 1 cup (110 g) shredded Monterey Jack cheese, ½ cup (120 ml) sour cream
  • Optional Toppings: Sliced green onions, chopped cilantro, diced avocado

Instructions

Step 1: Prep
Preheat the oven to 375°F (190°C).
Step 2: Sauté Aromatics
Heat olive oil in a large skillet over medium heat. Add the onion and bell pepper, sauté for 3–4 minutes until softened.
Step 3: Fragrant Garlic
Add garlic and cook for 1 minute until fragrant.
Step 4: Brown the Beef
Add ground beef and cook, breaking up the meat, until browned and cooked through—about 5–6 minutes. Drain excess fat if necessary.
Step 5: Season
Stir in taco seasoning, salt, pepper, and diced tomatoes with green chilies. Cook for 2 minutes.
Step 6: Add Cauliflower
Add riced cauliflower and cook for another 3–4 minutes until just tender. Remove from heat.
Step 7: Create Creaminess
Stir in half of the cheddar and Monterey Jack cheeses, and the sour cream until well combined.
Step 8: Assemble
Transfer the mixture to a greased 9x13-inch (23x33 cm) casserole dish. Sprinkle the remaining cheeses evenly over the top.
Step 9: Bake
Bake for 15–18 minutes, or until the cheese is melted and bubbly.
Step 10: Garnish
Let cool for 5 minutes. Garnish with green onions, cilantro, and avocado if desired. Serve hot.

Zusatztipps für die Zubereitung

Store leftovers in an airtight container in the refrigerator for up to 4 days. This dish reheats exceptionally well, making it a great option for office lunches or busy weeknight leftovers.

Varianten und Anpassungen

For extra spice, add 1 diced jalapeño with the vegetables during the sautéing stage. You can also substitute the ground beef with ground turkey or chicken for a leaner alternative without sacrificing flavor.

Serviervorschläge

Pair this hearty Tex-Mex casserole with a crisp, dry white wine or a refreshing sparkling water with lime. Serve alongside a simple green salad for a complete keto-friendly dinner experience.

Finished keto taco casserole ready to be served. Save
Finished keto taco casserole ready to be served. | olivedune.com

Whether you're following a strict keto lifestyle or just looking for a delicious, gluten-free dinner option, this taco casserole delivers big flavor and satisfying textures in every bite. Enjoy a guilt-free Tex-Mex feast that is as easy to make as it is to eat.

Cooking Questions & Answers

→ Can I substitute ground beef with other proteins?

Yes, ground turkey or chicken can be used as alternatives to ground beef for a different flavor and texture.

→ How do I make the cauliflower rice more tender?

Sauté the riced cauliflower briefly with the vegetables until it softens slightly before combining with other ingredients.

→ What are some optional toppings to enhance flavor?

Green onions, chopped cilantro, and diced avocado add fresh and creamy elements when served on top.

→ Is this dish suitable for gluten-free diets?

Yes, as long as the seasoning used is certified gluten-free, this dish can be enjoyed on a gluten-free diet.

→ How can I add more spice to the dish?

Including diced jalapeños with the vegetables will increase the heat and enhance the spicy notes.

→ What is the best way to store leftovers?

Store leftovers in an airtight container in the refrigerator and consume within 4 days for best quality.

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Keto Taco Casserole Cheesy

A hearty low-carb dish with seasoned beef, cauliflower rice, and a melted cheesy layer.

Prep Duration
15 min
Time to Cook
30 min
Overall Duration
45 min
Creator: Clara Moretti


Skill Level Easy

Cuisine Tex-Mex

Serves 6 Portions

Dietary Info Wheat-Free, Low-Carb Option

What You Need

Meat & Protein

01 1 lb ground beef (85% lean)
02 1 tablespoon olive oil

Vegetables

01 1 medium onion, finely chopped
02 2 cloves garlic, minced
03 1 bell pepper (red or green), diced
04 3 cups riced cauliflower (fresh or frozen)
05 1 can (10 oz) diced tomatoes with green chilies, drained

Seasonings

01 2 tablespoons sugar-free taco seasoning
02 ½ teaspoon salt
03 ¼ teaspoon black pepper

Dairy

01 1 cup shredded cheddar cheese
02 1 cup shredded Monterey Jack cheese
03 ½ cup sour cream

Optional Toppings

01 Sliced green onions
02 Chopped cilantro
03 Diced avocado

Steps

Step 01

Preheat Oven: Preheat the oven to 375°F.

Step 02

Sauté Aromatics: Heat olive oil in a large skillet over medium heat. Add the onion and bell pepper, sauté for 3 to 4 minutes until softened.

Step 03

Add Garlic: Add minced garlic and cook for 1 minute until fragrant.

Step 04

Brown Ground Beef: Add ground beef and cook, breaking up the meat, until browned and cooked through, approximately 5 to 6 minutes. Drain excess fat if necessary.

Step 05

Season Mixture: Stir in taco seasoning, salt, pepper, and drained diced tomatoes with green chilies. Cook for 2 minutes.

Step 06

Incorporate Cauliflower: Add riced cauliflower and cook for 3 to 4 minutes until just tender. Remove from heat.

Step 07

Combine with Cheese and Sour Cream: Stir in half of the cheddar and Monterey Jack cheeses, and the sour cream until well combined.

Step 08

Transfer to Casserole Dish: Transfer the mixture to a greased 9x13-inch casserole dish. Sprinkle the remaining cheeses evenly over the top.

Step 09

Bake Casserole: Bake for 15 to 18 minutes, or until the cheese is melted and bubbly.

Step 10

Rest and Garnish: Let cool for 5 minutes. Garnish with green onions, cilantro, and avocado if desired. Serve hot.

Essential Tools

  • Large skillet
  • Cutting board and knife
  • 9x13-inch casserole dish
  • Mixing spoon
  • Oven

Allergy Notice

Always review each component for allergens, and reach out to medical experts if you're uncertain.
  • Contains dairy (cheese, sour cream)
  • Verify certified gluten-free status of taco seasoning for gluten-free compliance
  • Check ingredient labels for hidden gluten or added sugars in seasonings

Nutrition Breakdown (each portion)

These details are for general advice—please consult your healthcare provider for specific guidance.
  • Energy (kcal): 340
  • Lipids: 23 g
  • Carbohydrates: 7 g
  • Proteins: 23 g

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