Sauté the veggies: In a skillet over medium heat, melt butter (or heat oil). Add onions, bell peppers, and mushrooms. Cook until tender and caramelized (about 6–8 minutes). Season with salt, pepper, and garlic powder. Remove from skillet and set aside.
Cook the beef: In the same skillet, cook the beef slices for 1–2 minutes per side, just until browned. Drizzle Worcestershire sauce if desired for extra flavor.
Assemble the roll-ups: Lay out each slice of beef, place a slice of cheese on top, and spoon some of the veggie mixture in the center. Roll tightly and secure with a toothpick if needed.
Melt & finish: Return the roll-ups to the skillet (or bake at 375°F / 190°C for 5–7 minutes) until the cheese is melted and everything is hot.
Garnish & serve: Sprinkle with chopped parsley or chives. Serve hot with a side of cauliflower mash, zucchini noodles, or salad.
🥩 Tips
For extra cheesiness, melt shredded provolone or cheddar on top just before serving.
Use thin-sliced roast beef for a no-cook shortcut.
You can also make these in the air fryer at 375°F (190°C) for about 6 minutes.
Would you like me to give you a chicken version of these roll-ups too (Keto Chicken Philly Roll Ups)? It’s just as delicious but lighter.
