High-Protein Keto Taco Casserole
High-Protein Keto Taco Casserole
Cheesy taco casserole with seasoned beef, sour cream, and fresh toppings — high-protein, low-carb, and ready in 40 minutes
This high-protein keto taco casserole has all the taco-night flavor without the tortillas. Seasoned ground beef is layered with cheese and sour cream, then baked until bubbly and finished with tomatoes, olives, jalapeños, and cilantro. Every serving delivers 32 g of protein and only 6 g net carbs.
Completely sugar-free, low-carb, and perfect for a weeknight dinner or easy meal prep.
Why you’ll love this casserole
- 32g protein per serving — a complete high-protein dinner
- Only 6g net carbs and fully sugar-free
- All the taco toppings in one baking dish
- Ready in about 40 minutes
- Family-friendly and easy to customize
- Great leftovers for lunch the next day
Health notes
- High protein: Ground beef and cheese make this very protein-dense.
- Low carb: No tortillas or rice — just meat, cheese, and fresh toppings.
- Sugar-free: Use a sugar-free taco seasoning.
- One-pan: Easy weeknight cooking with simple cleanup.
Key element — drain the beef well
After browning the meat, drain extra fat so the casserole stays layered and cheesy instead of greasy.
Ingredients
Beef layer
- 1½–2 lb (680–900g) lean ground beef
- 1 small onion, diced (optional)
- 2–3 Tbsp sugar-free taco seasoning
- ¼ cup water or broth
- Salt and pepper to taste
Cheese layer
- 1 cup sour cream or Greek yogurt
- 2 cups shredded cheddar or Mexican blend cheese, divided
- Optional: 4 oz cream cheese, softened (for extra creaminess)
Toppings
- 1 tomato, diced
- ¼ cup sliced black olives
- 1 jalapeño, sliced
- 2 Tbsp chopped cilantro
- Optional: diced avocado
Swaps
- Higher protein: Use extra-lean beef or mix in ground turkey.
- Spicy: Add extra jalapeños or a pinch of cayenne to the seasoning.
- Chicken taco: Swap the beef for cooked shredded chicken.
- Cauliflower layer: Add a thin layer of riced cauliflower under the beef if you want more volume.
Instructions
| 1 | Preheat oven. Preheat to 375°F (190°C). Lightly grease a 9×13-inch baking dish. |
| 2 | Brown the beef. Cook the ground beef and onion in a skillet until no longer pink. Drain extra fat. Stir in taco seasoning and water or broth and simmer 2–3 minutes until thickened. |
| 3 | Layer. Spread the seasoned beef in the baking dish. Dollop or spread the sour cream (and cream cheese if using) over the meat. Sprinkle with most of the shredded cheese. |
| 4 | Bake. Bake 18–25 minutes until the cheese is melted and bubbly around the edges. |
| 5 | Top and serve. Finish with remaining cheese if desired, then add tomato, olives, jalapeño, cilantro, and avocado. Rest 5 minutes, then slice and serve. |
Pro tips
- Drain the beef well so the casserole isn’t greasy.
- Use a sugar-free taco seasoning to keep carbs low.
- Add fresh toppings after baking so they stay bright and crisp.
- Let it rest a few minutes before cutting so the layers hold.
- This reheats well — add a little extra cheese when warming leftovers.
Nutrition
| Nutrient | Per serving |
|---|---|
| Calories | 420 |
| Protein | 32g |
| Net carbohydrates | 6g |
| Total carbohydrates | 8g |
| Fiber | 2g |
| Total fat | 28g |
| Sodium | 680mg |
Estimates based on lean ground beef, cheese, sour cream, and taco toppings. Exact numbers vary with beef fat content and toppings.
Variations
Taco salad bake
Serve each slice over shredded lettuce with extra salsa and avocado.
Buffalo taco
Stir a little hot sauce into the beef and finish with ranch instead of sour cream.
Turkey taco
Use ground turkey and add extra seasoning for a leaner version.
Pepper jack
Swap some cheddar for pepper jack for extra heat.
Storage
| Method | Time | Notes |
|---|---|---|
| Refrigerator | Up to 4 days | Store covered; add fresh toppings after reheating |
| Freezer | Up to 2 months | Freeze without fresh toppings; thaw overnight |
| Meal prep | Up to 4 days | Excellent for high-protein lunches |
FAQ
Test your knowledge
5 quick questions about this keto taco casserole
1. Protein per serving?
2. Net carbs per serving?
3. Why drain the beef?
4. About how long does this take?
5. When should you add fresh toppings?
