Keto Taco with Cheesy Topping

Featured in: Everyday Family Favorites

This low-carb dish layers seasoned ground beef with riced cauliflower and a rich blend of cheddar and Monterey Jack cheese. Fresh vegetables like bell pepper, onion, and garlic are sautéed to build flavor before combining with tomatoes and spices. The mixture is baked until bubbly and topped with sour cream and fresh avocado to add creaminess and zest. Ideal for a quick, hearty Tex-Mex inspired meal that keeps carbs low while delivering satisfying tastes and textures.

Updated on Sat, 14 Feb 2026 03:49:09 GMT
Keto taco casserole with cheesy topping and cauliflower rice in a golden-baked dish, garnished with green onions and cilantro for a low-carb Tex-Mex dinner. Save
Keto taco casserole with cheesy topping and cauliflower rice in a golden-baked dish, garnished with green onions and cilantro for a low-carb Tex-Mex dinner. | pecangroove.com

Savor a hearty, low-carb Tex-Mex dinner with this Keto Taco Casserole. Featuring seasoned ground beef, riced cauliflower, and a bubbly, golden cheesy topping, this easy-to-make dish satisfies taco cravings without the extra carbs. With only 5g of net carbs and 23g of protein per serving, it is a nutritious and flavorful option for any day of the week.

Keto taco casserole with cheesy topping and cauliflower rice in a golden-baked dish, garnished with green onions and cilantro for a low-carb Tex-Mex dinner. Save
Keto taco casserole with cheesy topping and cauliflower rice in a golden-baked dish, garnished with green onions and cilantro for a low-carb Tex-Mex dinner. | pecangroove.com

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This casserole is a family favorite that brings together the classic flavors of a taco—cumin, chili, and garlic—with the convenience of a one-dish meal. The cauliflower rice provides a perfect base, absorbing the savory juices from the beef and tomatoes, while the combination of cheddar and Monterey Jack cheese adds a rich, creamy finish.

Ingredients

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  • 1 lb (450 g) ground beef (85% lean)
  • 1 tbsp olive oil
  • 1 medium onion, finely chopped
  • 2 cloves garlic, minced
  • 1 bell pepper (red or green), diced
  • 3 cups (350 g) riced cauliflower (fresh or frozen)
  • 1 (10 oz/280 g) can diced tomatoes with green chilies, drained
  • 2 tbsp taco seasoning (sugar-free, homemade or store-bought)
  • ½ tsp salt
  • ¼ tsp black pepper
  • 1 cup (110 g) shredded cheddar cheese
  • 1 cup (110 g) shredded Monterey Jack cheese
  • ½ cup (120 ml) sour cream
  • Sliced green onions (optional topping)
  • Chopped cilantro (optional topping)
  • Diced avocado (optional topping)

Instructions

Step 1
Preheat the oven to 375°F (190°C).
Step 2
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
Add garlic and cook for 1 minute until fragrant.
Step 4
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
Stir in taco seasoning, salt, pepper, and diced tomatoes with green chilies. Cook for 2 minutes.
Step 6
Add riced cauliflower and cook for another 3–4 minutes until just tender. Remove from heat.
Step 7
Stir in half of the cheddar and Monterey Jack cheeses, and the sour cream until well combined.
Step 8
Transfer the mixture to a greased 9x13-inch (23x33 cm) casserole dish. Sprinkle the remaining cheeses evenly over the top.
Step 9
Bake for 15–18 minutes, or until the cheese is melted and bubbly.
Step 10
Let cool for 5 minutes. Garnish with green onions, cilantro, and avocado if desired. Serve hot.

Zusatztipps für die Zubereitung

For extra spice, add 1 diced jalapeño with the vegetables. Always check labels for hidden gluten or sugar in seasonings to ensure the dish remains keto-compliant. If using frozen cauliflower rice, make sure to cook it until the excess moisture has evaporated before adding the dairy.

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Varianten und Anpassungen

You can easily substitute the ground beef with ground turkey or chicken if you prefer a leaner protein. For those who enjoy extra heat, try using a spicy taco seasoning or adding a dash of hot sauce into the beef mixture before baking.

Serviervorschläge

Serve the casserole hot, garnished with fresh green onions, chopped cilantro, and diced avocado for added creaminess. This dish pairs beautifully with a crisp, dry white wine or refreshing sparkling water with a squeeze of lime to balance the rich Tex-Mex flavors.

Close-up of a Keto Taco Casserole with melted cheese and fresh green garnish. Save
Close-up of a Keto Taco Casserole with melted cheese and fresh green garnish. | pecangroove.com

This Keto Taco Casserole is a stress-free solution for your next taco night. With its perfect balance of savory spices and gooey cheese, it provides all the satisfaction of a traditional taco in a convenient, low-carb format. Enjoy this delicious, gluten-free meal with your favorite toppings!

Recipe Questions & Answers

Can I substitute ground beef with other proteins?

Yes, ground turkey or chicken work well and keep the dish lean while maintaining flavor.

How do I make cauliflower rice if not using pre-riced cauliflower?

Pulse fresh cauliflower florets in a food processor until they resemble rice-sized pieces, then lightly sauté before mixing.

What kind of cheese melts best for the topping?

A combination of cheddar and Monterey Jack offers a smooth melt with rich, tangy flavor.

Can this dish be made spicier?

Adding diced jalapeños or a pinch of cayenne pepper to the vegetables enhances the heat without overpowering.

How should leftovers be stored?

Keep leftovers in an airtight container in the refrigerator and consume within four days for best freshness.

Is it necessary to drain fat after browning beef?

Draining excess fat helps reduce greasiness and keeps the casserole lighter.

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Keto Taco with Cheesy Topping

Low-carb casserole featuring ground beef, cauliflower rice, and melted cheese for bold taco flavors.

Prep Duration
15 min
Cook Duration
30 min
Overall Time
45 min
By Pecan Groove Holly Emerson


Skill Level Easy

Culinary Tradition Tex-Mex

Portions 6 Number of Servings

Diet Concerns No Gluten, Low Carbohydrate

What You'll Need

Meat & Protein

01 1 lb ground beef (85% lean)
02 1 tbsp 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 tbsp sugar-free taco seasoning
02 ½ tsp salt
03 ¼ tsp 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

Step-by-Step Guide

Step 01

Preheat Oven: Set oven to 375°F and allow to fully preheat.

Step 02

Sauté Aromatics: Heat olive oil in a large skillet over medium heat. Add chopped onion and bell pepper, sautéing for 3-4 minutes until softened. Add minced garlic and cook for 1 additional minute until fragrant.

Step 03

Brown Beef: Add ground beef to the skillet, breaking apart as it cooks, until browned and cooked through (approximately 5-6 minutes). Drain excess fat if needed.

Step 04

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

Step 05

Add Cauliflower Rice: Add riced cauliflower to the skillet and cook for 3-4 minutes until just tender. Remove from heat.

Step 06

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

Step 07

Transfer to Casserole: Pour the beef and cauliflower mixture into a greased 9x13-inch casserole dish. Spread evenly and sprinkle remaining cheeses over the top.

Step 08

Bake Casserole: Bake for 15-18 minutes until the cheese is melted and bubbly.

Step 09

Cool and Garnish: Allow casserole to cool for 5 minutes. Top with green onions, cilantro, and avocado if desired. Serve hot.

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Tools Needed

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

Allergy Details

Always check each item for allergens and reach out to your doctor if unsure.
  • Contains dairy (cheddar cheese, Monterey Jack cheese, sour cream)
  • Contains gluten unless using certified gluten-free taco seasoning
  • Check seasoning labels for hidden gluten or added sugars

Nutrition Details (per serving)

Nutrition info is a guide; don't substitute for professional advice.
  • Calorie Count: 340
  • Fat content: 23 g
  • Carbohydrate: 7 g
  • Protein Amount: 23 g

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