Savory Low Carb Philly Cheesesteak Casserole: Protein Packed

There’s something deeply comforting about a casserole bubbling away in the oven, filling the kitchen with savory aromas that promise a hearty, satisfying meal. But when you’re trying to stick to a low-carb lifestyle, classic comfort dishes often feel off-limits. That’s exactly why I created this Savory Low Carb Philly Cheesesteak Casserole: Protein Packed and incredibly easy to make. It captures all the iconic flavors of a Philly cheesesteak—tender beef, melty cheese, and savory peppers and onions—without the carb-heavy bread. Instead, everything bakes together into a rich, cheesy, protein-packed keto casserole that feels indulgent but fits right into your health goals.

I first dreamed up this recipe during a busy week when my family was craving something cozy and filling, but I didn’t want to spend hours in the kitchen or deal with a pile of dishes. This one-pan wonder came to the rescue, and it’s been a regular in our dinner rotation ever since. Whether you’re new to low-carb eating or a seasoned pro, this easy low carb dinner recipe delivers on flavor, simplicity, and nutrition. It’s the kind of meal that brings everyone to the table with zero complaints—even the pickiest eaters.

Savory Low Carb Philly Cheesesteak Casserole: Protein Packed Ingredients

Savory Low Carb Philly Cheesesteak Casserole: Protein Packed starts with simple, wholesome ingredients that come together for maximum flavor. Here’s what you’ll need:

• 1.5 lbs thinly sliced beef steak (such as sirloin or ribeye)
• 1 large green bell pepper, thinly sliced
• 1 medium onion, thinly sliced
• 8 oz sliced mushrooms
• 2 cloves garlic, minced
• 1 cup beef broth
• 1 cup heavy cream
• 2 cups shredded provolone cheese
• 1 cup shredded mozzarella cheese
• 2 tbsp olive oil or avocado oil
• 1 tsp Worcestershire sauce
• 1/2 tsp smoked paprika
• Salt and black pepper to taste
• Fresh parsley for garnish (optional)

Timing for Your Keto Philly Cheesesteak Bake

• Prep time: 15 minutes
• Cook time: 35 minutes
• Total time: 50 minutes

This healthy cheesesteak casserole comes together in under an hour, making it a fantastic option for busy weeknights when you need something delicious and nourishing without a lot of fuss.

Step-by-Step Instructions for Your Easy Low Carb Dinner Recipe

Step 1: Preheat and Prepare

Preheat your oven to 375°F (190°C). While it heats, slice your bell pepper, onion, and mushrooms into thin, even strips. Thinly slice the beef against the grain for maximum tenderness.

Step 2: Sauté the Vegetables

Heat olive oil in a large, oven-safe skillet over medium heat. Add the sliced peppers, onions, and mushrooms, and sauté until they begin to soften and develop a little color, about 5-7 minutes. Stir in the minced garlic and cook for another minute until fragrant.

Step 3: Cook the Beef

Push the vegetables to one side of the skillet and add the sliced beef in a single layer. Season with salt, pepper, and smoked paprika. Cook for 2-3 minutes per side until browned but not overcooked. The beef will finish cooking in the oven, so don’t worry if it’s still a little pink.

Step 4: Create the Sauce

Pour in the beef broth, heavy cream, and Worcestershire sauce. Stir everything together, scraping up any browned bits from the bottom of the pan. Let the mixture simmer for 2-3 minutes to slightly thicken.

Step 5: Add the Cheese

Sprinkle the shredded provolone and mozzarella cheeses evenly over the top of the beef and vegetable mixture. Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until the cheese is melted, bubbly, and lightly golden.

Step 6: Rest and Serve

Remove the casserole from the oven and let it rest for 5 minutes before serving. This allows the sauce to thicken slightly and makes serving easier. Garnish with fresh parsley if desired.

Nutritional Information for Your Protein Packed Keto Casserole

Per serving (based on 6 servings):

• Calories: 485
• Protein: 38g
• Fat: 35g
• Carbohydrates: 6g
• Fiber: 1g
• Net Carbs: 5g

This gluten free beef casserole is not only rich in protein to keep you full and satisfied, but it’s also low in carbs, making it ideal for keto, low-carb, or gluten-free diets.

Equipment Needed for Your Healthy Cheesesteak Casserole

• Large oven-safe skillet (like cast iron or stainless steel)
• Sharp knife and cutting board
• Measuring cups and spoons
• Mixing spoon or spatula

If you don’t have an oven-safe skillet, you can transfer the mixture to a greased 9×13 inch baking dish before adding the cheese and baking.

Why You’ll Love This Savory Low Carb Philly Cheesesteak Casserole

• It’s incredibly flavorful and satisfying, with all the classic Philly cheesesteak taste you crave.
• This one pan keto meal means minimal cleanup and maximum convenience.
• Packed with protein and healthy fats, it keeps you full and energized for hours.
• The recipe is flexible—easy to customize with your favorite veggies or cheeses.
• It’s a crowd-pleaser that works for family dinners, meal prep, or even entertaining.

Healthier Alternatives for Your Keto Philly Cheesesteak Bake

This recipe is already designed to be healthy and low-carb, but you can easily adjust it to fit specific dietary needs or preferences:

• For a dairy-free version, use dairy-free cheese and substitute coconut cream for heavy cream.
• To boost vegetables, add spinach, zucchini, or cauliflower rice during the sauté step.
• If you prefer chicken, thinly sliced chicken breast can replace the beef for a lighter option.
• For a spicier kick, add sliced jalapeños or a dash of hot sauce.

If you enjoy experimenting with beef in different forms, you might also love our High Protein Slow Cooker Garlic Butter Beef Bites for another simple, savory meal.

Serving Suggestions for Your Gluten Free Beef Casserole

This casserole is a complete meal on its own, but you can pair it with a simple side salad, steamed green beans, or roasted asparagus for a well-rounded dinner. For a fun twist, serve it in bowls with a sprinkle of extra cheese and a dollop of sour cream or sugar-free ranch dressing. If you’re feeding a crowd, it pairs wonderfully with other comfort food favorites like our Simple and Delicious Tater Tot Casserole Recipe for those not following a low-carb plan.

Common Mistakes to Avoid with Your One Pan Keto Meal

• Overcooking the beef before baking can make it tough. Brown it quickly and let the oven do the rest.
• Skipping the rest time after baking can result in a soupy texture. Let it sit for 5 minutes to allow the sauce to set.
• Using thickly sliced vegetables will extend cooking time and may leave them too crunchy. Thin, even slices are key.
• Not using an oven-safe skillet means an extra dish to wash. Double-check your skillet’s oven safety before you begin.

Storing Tips for Your Protein Packed Keto Casserole

Leftovers can be stored in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave or the entire casserole in the oven at 350°F until warmed through. This dish also freezes well—wrap tightly or store in a freezer-safe container for up to 3 months. Thaw in the refrigerator overnight before reheating.

If you’re a fan of make-ahead meals, you’ll appreciate our Slow Cooker Keto Chicken Cream Cheese Soup, another protein-packed option that’s perfect for busy weeks.

Conclusion: Your New Go-To Easy Low Carb Dinner Recipe

This Savory Low Carb Philly Cheesesteak Casserole: Protein Packed is proof that you don’t have to give up your favorite flavors to eat healthily. It’s hearty, cheesy, and deeply satisfying—everything you want in a comfort food meal, but with a nutritious twist. Whether you’re cooking for your family, prepping meals for the week, or simply treating yourself to something special, this casserole delivers every time.

I’d love to hear how your Philly cheesesteak casserole turns out! Leave a comment below and share your experience. If you’re looking for more savory, family-friendly ideas, check out our Savory Pierogi Casserole with Kielbasa or these Irresistible Garlic Parmesan Cheeseburger Bombs for your next cooking adventure. Don’t forget to tag @Stacksipsnack on Pinterest so we can see your delicious creations.

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