High-Protein Taco Casserole
All the bold taco flavors in a high-protein low-carb casserole — ready in 30 minutes
This is taco night turned into a hearty high-protein casserole. Seasoned ground beef is layered with cheese, topped with fresh taco fixings, and baked until bubbly. Every serving delivers 38 g of protein and only 6 g net carbs.
One dish, completely low-carb, and perfect for a satisfying family dinner or meal prep that still fits your macros.
Why you’ll love this casserole
- 38g protein per serving — a complete high-protein meal
- Only 6g net carbs and fully low-carb
- Classic taco flavor in every bite
- Ready in about 30 minutes
- One baking dish, minimal cleanup
- Excellent for meal prep and leftovers
Health notes
- High protein: Lean ground beef and cheese keep the protein high and the dish filling.
- Low carb: No tortillas or rice — just seasoned meat, cheese, and fresh toppings.
- Sugar-free: Use a sugar-free taco seasoning or make your own.
- Customizable: Load up with your favorite low-carb taco toppings.
Key element — well-seasoned beef
Don’t skimp on the taco seasoning. A good blend of chili powder, cumin, garlic, and paprika is what makes this taste like real tacos. Taste and adjust before assembling.
Ingredients
Beef base
- 1.5–2 lb (680–900g) lean ground beef (90% lean or leaner)
- 1 medium onion, diced
- 2–3 garlic cloves, minced
- 2–3 Tbsp taco seasoning (sugar-free) or homemade blend
- ½ cup water or low-sodium broth
- Salt and black pepper to taste
Cheese & assembly
- 2–2½ cups shredded Mexican blend or cheddar cheese
- ½–¾ cup sour cream or plain Greek yogurt (for the creamy layer)
Fresh toppings
- Shredded lettuce
- Diced tomato
- Sliced black olives
- Sliced jalapeños
- Fresh cilantro
- Optional: diced avocado, green onion, or a drizzle of hot sauce
Swaps
- Turkey or chicken: Use lean ground turkey or chicken for a lighter version.
- Extra creamy: Mix a little cream cheese into the sour cream layer.
- Spicier: Add extra chili powder, cayenne, or hot sauce to the beef.
- No dairy: Use dairy-free cheese and coconut yogurt alternatives.
Instructions
| 1 | Cook the beef. Preheat oven to 375°F (190°C). In a large skillet over medium-high heat, cook the ground beef with the onion until browned and cooked through, about 7–8 minutes. Drain excess fat. |
| 2 | Season. Stir in the garlic, taco seasoning, and water or broth. Simmer 2–3 minutes until the liquid reduces and the beef is well coated. Taste and adjust salt and spice. |
| 3 | Assemble the base. Spread the seasoned beef evenly in a 9×13-inch baking dish. Dollop and gently spread the sour cream or Greek yogurt over the beef. Sprinkle with about half of the shredded cheese. |
| 4 | Bake. Top with the remaining cheese. Bake 12–15 minutes until the cheese is melted and bubbly. For extra browning, broil the last 1–2 minutes while watching closely. |
| 5 | Finish and serve. Remove from the oven and let rest 3–5 minutes. Top with shredded lettuce, diced tomato, black olives, jalapeños, cilantro, and any other desired toppings. Slice and serve. |
Pro tips
- Use a leaner ground beef so the casserole isn’t greasy.
- Make your own taco seasoning to control salt and avoid hidden sugars.
- Add the fresh toppings after baking so they stay crisp and bright.
- For cleaner slices, let the casserole rest a few minutes before cutting.
- This reheats very well — store toppings separately if meal prepping.
Nutrition
| Nutrient | Per serving (1/6) |
|---|---|
| Calories | 420 |
| Protein | 38g |
| Net carbohydrates | 6g |
| Total carbohydrates | 8g |
| Fiber | 2g |
| Total fat | 26g |
| Sodium | 720mg |
Estimates based on lean ground beef, cheddar cheese, and sugar-free taco seasoning. Exact numbers vary with cheese amount and seasoning brand.
Variations
Chicken taco version
Swap the ground beef for shredded cooked chicken mixed with the same seasoning.
Spicy version
Add extra jalapeños, cayenne, or a few dashes of hot sauce to the beef.
Extra creamy
Mix a few ounces of softened cream cheese into the sour cream layer.
Loaded style
Add cooked crumbled bacon or a layer of refried-style black soybeans (if tolerated) for extra texture.
Storage
| Method | Time | Notes |
|---|---|---|
| Refrigerator | Up to 4 days | Store base and fresh toppings separately for best texture |
| Freezer | Up to 2 months | Freeze the baked base only; add fresh toppings after reheating |
| Meal prep | Up to 4 days | Perfect for grab-and-go lunches |
FAQ
Test your knowledge
5 quick questions about this taco casserole
1. Protein per serving?
2. Net carbs per serving?
3. When should you add the fresh toppings?
4. About how long does this take?
5. Best way to store leftovers?
