High-Protein Cheesesteak Casserole
High-Protein Cheesesteak Casserole
Low carb • Sugar-free cheesesteak casserole — 35 minutes, four servings
This is a high-protein cheesesteak casserole, not a hoagie bake. Thin steak, peppers, mushrooms, and mozzarella melt in a skillet until the cheese is gold and blistered, like the photo. Thirty-five minutes. No roll, no flour, no sugar.
Four servings. Cook the mushrooms dry or the sauce thins.
Why you’ll love this casserole
- 35g protein per serving — steak and mozzarella
- 5g net carbs — peppers and mushrooms, no roll
- About 35 minutes, one skillet
- Gold-blistered cheese, red pepper strips, mushrooms, like the photo
- No boxed mix, no sugar
- It stays thick if you cook the mushrooms dry
Health notes
- Protein: High. Steak is the skillet.
- Lower carb than a cheesesteak sandwich: No roll or flour. Close to keto-zero at 5g net.
- Four servings: Macros are per scoop, not the pan.
- A hoagie roll or extra onion will jump the carbs. Keep the veg measured.
Key element — dry mushrooms, then a gold cheese lid
Wet mushrooms flood the pan. Sauté them until the skillet is dry. Add steak and peppers, cover with mozzarella, and bake or broil until the top blisters gold, like the photo.
Ingredients
Casserole (4 servings)
- 1 1/2 lb thinly sliced steak
- 1 red bell pepper, sliced
- 1 green bell pepper, sliced
- 8 oz mushrooms, sliced
- 1/2 small onion, sliced
- 2 cloves garlic, minced
- 4 oz cream cheese
- 1/4 cup heavy cream
- 1 1/2 cups shredded mozzarella
- 1 Tbsp olive oil or butter
- 1/2 tsp salt
- 1/4 tsp black pepper
- 1 Tbsp chopped parsley
Swaps
- Sirloin or ribeye: Same 1 1/2 lb, sliced thin.
- Provolone: Swap half the mozzarella.
- Hoagie rolls: Skip them. That is how carbs jump.
Instructions
| 1 | Heat. Heat oven to 400 F (205 C). Heat oil in an oven-safe skillet. |
| 2 | Veg. Sauté onion, peppers, mushrooms, and garlic until the pan is dry. |
| 3 | Steak. Push veg aside. Sear steak strips 1 to 2 minutes. Stir in cream cheese, cream, salt, and pepper. |
| 4 | Cheese. Cover with mozzarella. |
| 5 | Bake. Bake 8 to 10 minutes until the cheese is gold and blistered, like the photo. Rest 3 minutes. Add parsley. One fourth is one serving. |
Pro tips
- Slice the steak thin against the grain so it stays tender.
- Cook the mushrooms until dry. Extra liquid thins the scoop.
- An oven-safe skillet goes straight from stove to oven.
- Broil 1 minute at the end if you want extra-brown spots.
- Rest 3 minutes so the cheese sets before you scoop.
Nutrition
| Nutrient | Per serving (1 of 4) |
|---|---|
| Calories | 420 |
| Protein | 35g |
| Net carbohydrates | 5g |
| Total carbohydrates | 7g |
| Fiber | 2g |
| Total fat | 28g |
| Sodium | 520mg |
Estimates with steak, peppers, mushrooms, cream cheese, and mozzarella. A hoagie roll will raise carbs. This is a high-protein, lower-carb cheesesteak casserole, close to keto-zero.
Variations
Provolone
Swap half the mozzarella for sliced provolone.
Jalapeño
Add 1 sliced jalapeño with the peppers.
Chicken
Swap the steak for 1 1/2 lb thin-sliced chicken.
No oven
Lid the skillet 3 minutes to melt the cheese if you skip the bake.
Storage
| Method | Time | Notes |
|---|---|---|
| Eat now | Best | While the cheese is stretchy |
| Refrigerator | Up to 4 days | Reheat in the skillet until hot |
| Freezer | Up to 1 month | Thaw overnight. Reheat covered |
FAQ
Test your knowledge
5 quick questions about this casserole
1. Protein per serving?
2. Net carbs per serving?
3. How many servings in the skillet?
4. Why cook the mushrooms dry first?
5. Why skip the roll?
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