Hey y'all! If you're craving all the classic flavors of a Philly cheesesteak without the carbs, this Low Carb Philly Cheesesteak Casserole is about to become your new go-to comfort food. It's loaded with juicy beef, melty cheese, and sautéed peppers, making it a hearty and healthy dish that's perfect for busy weeknights, meal prep, or feeding a hungry crowd. Let's get cooking!
Why You'll Love This Low Carb Philly Cheesesteak Casserole
- Rich, cheesy, and packed with savory beef flavor in every bite.
- Low-carb and keto-friendly—no bread required!
- Quick to prep and bakes in under an hour.
- Perfect for meal prepping or potluck gatherings.
- Customizable with your favorite veggies and cheeses.
Low Carb Philly Cheesesteak Casserole Ingredients
- 1.5 lbs ground beef (85% lean recommended)
- 2 tablespoons olive oil
- 1 large onion, thinly sliced
- 1 green bell pepper, thinly sliced
- 1 red bell pepper, thinly sliced
- 2 cloves garlic, minced
- 1 teaspoon salt
- ½ teaspoon ground black pepper
- 1 teaspoon Worcestershire sauce
- 6 ounces cream cheese, softened
- 2 cups shredded provolone cheese (or mozzarella)
- 1 cup shredded cheddar cheese (optional, for extra flavor)
How to Make Low Carb Philly Cheesesteak Casserole
Step 1: Prep and Sauté the Veggies
Preheat your oven to 375°F (190°C). In a large skillet over medium heat, add 1 tablespoon olive oil. Toss in the onions and bell peppers. Sauté until they're tender and slightly caramelized, about 7 minutes. Stir in the minced garlic and cook for another minute. Transfer veggies to a bowl and set aside.
Step 2: Brown the Beef
Add the remaining olive oil to the skillet. Crumble in the ground beef. Cook until it's browned all over, breaking it apart with a spatula. Drain excess grease, then season with salt, pepper, and Worcestershire sauce. Stir in the softened cream cheese until well blended and creamy.
Step 3: Assemble the Casserole
Spread the creamy beef mixture evenly in a 9x13-inch baking dish. Top with the sautéed pepper and onion mixture. Sprinkle provolone (or mozzarella) and cheddar cheese on top for that golden, gooey finish.
Step 4: Bake to Perfection
Bake uncovered for 18-20 minutes, or until the cheese is bubbly and lightly golden on top. Let cool for 5 minutes before serving.
Notes for the Perfect Low Carb Philly Cheesesteak Casserole
- For even deeper flavor, use a combination of provolone and mozzarella cheeses (learn about cheese options).
- If you're prepping ahead, assemble the casserole and refrigerate for up to 24 hours before baking.
- Want to boost the nutrition? Add more veggies like mushrooms or spinach (see more about keto diet veggies).
Variations on Low Carb Philly Cheesesteak Casserole
- Chicken Philly Version: Swap beef for chopped rotisserie chicken for a lighter twist.
- Spicy Kick: Add diced jalapeños or a pinch of red pepper flakes for heat.
- Mushroom Lover's: Stir in 1 cup sautéed mushrooms for extra texture and umami.
Required Equipment for Low Carb Philly Cheesesteak Casserole
- Large skillet
- 9x13-inch casserole/baking dish
- Cutting board and sharp knife
- Mixing spoon or spatula
How to Store & Reheat Low Carb Philly Cheesesteak Casserole
Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave or cover and warm in a 325°F (165°C) oven until heated through. For longer storage, freeze portions for up to 2 months and thaw overnight in the fridge before reheating.
What to Serve with Low Carb Philly Cheesesteak Casserole
- Pair with a crisp garden salad or roasted low-carb veggies.
- Serve alongside keto garlic bread or cauliflower rice for a satisfying meal (try these options at Delish's keto side dishes).
Pro Tips for the Best Low Carb Philly Cheesesteak Casserole
- Let the casserole cool for several minutes before slicing to help it set.
- For extra melty cheese, add a layer of cheese halfway through baking.
- Use a broiler for the last 1-2 minutes to brown the cheese topping (see broiling tips at Bon Appétit).
Low Carb Philly Cheesesteak Casserole FAQ
Can I make Low Carb Philly Cheesesteak Casserole ahead of time?
Absolutely! Prepare it up to 24 hours in advance and bake when ready to serve.
What cheese works best for this casserole?
Provolone and mozzarella are classic, but cheddar or a cheese blend adds great flavor.
How do I keep the casserole from getting watery?
Drain excess fat from the beef and sauté the veggies until most moisture evaporates before baking.
- Prep time: 15 minutes
- Cook time: 25 minutes
- Total time: 40 minutes
Ingredients
- 1.5 lbs thinly sliced beef sirloin or steak
- 1 large green bell pepper, sliced
- 1 large red bell pepper, sliced
- 1 medium onion, sliced
- 2 cloves garlic, minced
- 2 cups shredded mozzarella cheese
- 1 cup shredded provolone cheese
- 2 tablespoon olive oil
- Salt and pepper to taste
Instructions
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1Preheat oven to 375°F (190°C). Lightly grease a 9x13 inch casserole dish.
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2Heat olive oil in a large skillet over medium-high heat. Add sliced onions and bell peppers, sautéing until tender, about 5-7 minutes.
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3Stir in minced garlic and cook for 1 minute. Add the sliced beef, season with salt and pepper, and cook until browned.
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4Transfer the beef and vegetable mixture to the prepared casserole dish. Top evenly with mozzarella and provolone cheese.
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5Bake in the oven for 18-20 minutes or until cheese is melted and bubbly. Let cool for a few minutes before serving.
Approximate Information for One Serving
Nutrition Disclaimers
Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.
Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.
To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.
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