Keto Beef Pepper Steak Recipe

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Cozy Keto Beef Pepper Steak Recipe, Made Simple

Nothing beats a warm skillet meal that feels both hearty and light, especially when you’re following a keto lifestyle. I love how this Keto Beef Pepper Steak Recipe hits that perfect balance — it’s rich and savory, yet fresh with bright bell pepper and green onion.

You’ll find the combination of tender, thinly sliced sirloin and a caramelized onion-pepper mix offers such comforting textures and bold flavors. It’s the kind of dish you’ll want to make again and again, whether it’s a weeknight dinner or a casual weekend treat.

Plus, it comes together fast, which means more time relaxing and less time fussing over the stove. Ready to warm up your kitchen with this flavorful, keto-friendly staple? Let’s dive in.

Ingredient Lowdown

• Sirloin steak (1 lb): Thinly sliced for quick cooking and tender bites. You can also use flank or skirt steak.
• Coconut oil (2 tbsp): Adds a subtle sweetness and withstands high heat well; olive oil works if preferred.
• Bell pepper (1, sliced): Offers crunch and natural sweetness — red, yellow, or green all work beautifully.
• Medium onion (1, sliced): Brings a soft, caramelized base flavor that rounds the dish out.
• Garlic (3 cloves, minced): Fresh and fragrant, it wakes up the savory profile.
• Soy sauce (1/4 cup): The salty umami punch; tamari is an excellent gluten-free alternative.
• Erythritol (1 tbsp): Adds just a touch of keto-friendly sweetness to balance the sauce nicely.
• Ginger (1 tsp, minced): Delivers a warm, zesty lift that brightens the whole dish.
• Salt and pepper: Season to your taste, but keep it balanced so flavors shine.
• Green onions (for garnish): Adds fresh color and mild sharpness at the finish.

Set Up for Success

Before you start, slice your sirloin steak as thin as possible — this helps you get that buttery, quick-seared texture without overcooking. Prep your veggies so everything’s ready to go; once the skillet heats up, things move fast. Use a large, heavy-bottomed skillet or cast iron over medium-high heat for the ideal sear.

Step-by-Step: Keto Beef Pepper Steak Recipe

1. Heat 2 tablespoons of coconut oil in a large skillet over medium-high heat. You’ll want the oil shimmering and hot but not smoking—this helps develop that toasty, caramelized crust on your beef slices.
2. Add the thinly sliced sirloin steak in a single layer, spreading it out to maximize contact with the pan. Let it sear undisturbed for a couple of minutes, then toss to brown the other side. The beef should get a rich golden-brown color without stewing in its juices. Once browned, remove and set aside—don’t overcrowd the pan or the steak will steam instead of sear.
3. In the same skillet, add the sliced bell pepper, onion, and minced garlic. Stir and sauté gently until they’re tender but still have a little snap. The aroma of garlic and softened onion mingling will soon fill your kitchen—it’s one of my favorite cooking moments.
4. Return the seared steak to the skillet. Stir in the soy sauce, erythritol, minced ginger, salt, and pepper. Cook everything together for 2 to 3 minutes, letting the sauce thicken slightly and coat the beef and veggies in a glossy, flavorful blanket.

Flavor Twists for Keto Beef Pepper Steak Recipe

• Add a splash of sesame oil at the end for a nutty aroma and slightly smoky edge.
• Swap bell peppers with poblano or Anaheim peppers for a smoky, mild heat.
• Mix in sliced mushrooms to deepen umami and add juicy texture.
• Stir in fresh chili flakes or a tiny dash of cayenne for a spicy kick.
• Try a squeeze of fresh lime or lemon juice off the heat to brighten flavors just before serving.
• Top with toasted sesame seeds for a crunchy, toasty finish.

Storage & Make-Ahead Tips

• Refrigerate: Store leftovers in an airtight container for up to 3 days. Reheat gently on the stovetop or in the microwave to retain tenderness.
• Freeze: This dish freezes well! Portion it out in freezer-safe containers and thaw overnight in the fridge before reheating.
• Prep ahead: Slice beef and veggies in advance and keep separately in the fridge to speed up cooking on busy nights.
• Reheat tip: Add a splash of water or broth when reheating to revive the saucy texture without drying out the beef.

Keto Beef Pepper Steak Recipe FAQs

• Can I use a different cut of beef? Yes! Flank or skirt steak also work beautifully when sliced thinly against the grain.
• Is soy sauce keto-friendly? Most soy sauces have minimal carbs, but tamari or coconut aminos are great lower-sodium, gluten-free options.
• Can I add other veggies? Absolutely. Broccoli, snap peas, or zucchini slices complement this recipe well and keep it keto-friendly.
• What sweeteners can replace erythritol? You can try monk fruit sweetener or stevia blends calibrated for cooking, but adjust amounts carefully to taste.
• How do I keep the steak tender? Slice thinly and sear quickly on high heat without overcrowding the pan to lock in juices and avoid toughness.

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