High-Protein Low-Carb Taco Casserole

Layered taco beef and melted cheese — keto-friendly, cheesy, and satisfying

This high-protein low-carb taco casserole stacks seasoned beef, sugar-free salsa, and cheddar into lasagna-style layers. No regular tortillas. Each slice delivers 38 g of protein and 6 g net carbs, then gets avocado, tomato, and cilantro on top.

Keto-friendly, cheesy, and built for leftovers.

Prep15 min

Bake25 min

Servings6

Protein38g

Net Carbs6g

Calories420

Why you’ll love this casserole

38g protein per serving
Only 6g net carbs
No flour tortillas
Cheesy layered slices
Keto-friendly taco night
Holds together when cut

Health notes

High protein: Lean beef and lots of cheese make a full meal.
Low carb: Skip the chips and regular tortillas.
Keto-friendly: Use sugar-free taco seasoning and salsa.
Fresh finish: Avocado and tomato go on after baking.

Key element — drain the beef well

Extra fat and watery salsa make the layers slide. Drain the meat, thicken the filling, then stack so the casserole cuts like the photo.

Ingredients

Beef filling

2 lb (900g) lean ground beef
1 small onion, diced
2 garlic cloves, minced
2 Tbsp sugar-free taco seasoning
¾ cup sugar-free salsa or crushed tomatoes
½ tsp salt

Layers and topping (6 servings)

3 cups shredded cheddar, divided
1 cup shredded mozzarella
½ cup sour cream (optional, between layers)
1 avocado, diced
1 small tomato, diced
Fresh cilantro

Swaps

Higher protein: Use extra-lean beef and extra cheddar.
Tortilla layers: Add 2–3 low-carb tortillas if you want a lasagna look.
Turkey: Ground turkey works the same way.
Spicy: Add jalapeño to the beef.

Instructions

Cook the filling. Heat the oven to 375°F (190°C). Brown beef with onion and garlic. Drain well. Stir in taco seasoning, salsa, and salt. Simmer 3–4 minutes until thick.

Layer. In a greased 9×13-inch dish, spread one-third of the beef, then cheddar and mozzarella. Repeat two more times, finishing with cheese.

Bake. Bake 20–25 minutes until the edges bubble and the top is melted and golden.

Rest and garnish. Rest 8–10 minutes so the slices hold. Top with avocado, tomato, and cilantro.

Pro tips

Resting is what keeps the layers stacked on the plate.
Check taco seasoning labels — many packets hide sugar.
A mix of cheddar slices and shredded cheese gives those clean melted sheets.
Add sour cream after baking if you want it extra creamy.
Cut with a sharp knife wiped between slices.

Nutrition

Nutrient	Per serving
Calories	420
Protein	38g
Net carbohydrates	6g
Total carbohydrates	8g
Fiber	2g
Total fat	26g
Sodium	720mg

Estimates based on lean ground beef, sugar-free salsa, and cheese, divided into 6 servings. Exact numbers vary with seasoning and avocado amount.

Variations

Taco lasagna

Add 3 low-carb tortillas between the beef layers.

Chicken taco

Use shredded chicken instead of beef.

Loaded

Add sliced jalapeño and extra cheddar before baking.

Meal-prep

Bake, cool, and cut into squares for lunches.

Storage

Method	Time	Notes
Refrigerator	Up to 4 days	Add avocado fresh
Freezer	Up to 2 months	Freeze before the fresh toppings
Reheat	Oven 325°F	Cover so the cheese stays soft

FAQ

Yes. With no regular tortillas or chips, each serving stays around 6g net carbs.

No. Cheese and beef layers already stack. Low-carb tortillas are optional.

It was cut too soon or the beef was watery. Drain well and rest 8–10 minutes.

Only if it is sugar-free. Many packets add sugar and extra carbs.

Yes. Freeze without avocado and tomato, then add those after reheating.

A sugar-free salsa or plain crushed tomatoes seasoned with chili powder.

Test your knowledge

5 quick questions about this taco casserole

1. Protein per serving?

2. Net carbs per serving?

3. Why drain the beef well?

4. When should you add avocado?

5. Best way to store leftovers?

High-Protein Low-Carb Taco Casserole