Keto London Broil Recipe Instant Pot: Pressure-Cooked Tender Beef in Minutes

This keto-friendly approach transforms tough London broil into fall-apart tender beef using the Instant Pot’s pressure cooking power. The method locks in juices while breaking down fibers, delivering results that rival slow-cooked dishes in a fraction of the time.

I developed this technique specifically for low-carb diets, ensuring rich flavor without added sugars or high-carb ingredients. The process is precise: sear the meat first for depth, then pressure cook to achieve perfect tenderness every time.

The final dish features beef so tender it cuts with a fork, bathed in a savory au jus that’s naturally keto-compliant. Each bite delivers the satisfaction of a restaurant-quality meal with minimal effort and maximum flavor.

Ready in under an hour, this method proves that pressure cooking can elevate even the most budget-friendly cuts into something extraordinary.

Ingredients for Keto London Broil Recipe Instant Pot

Transform budget-friendly beef into a keto masterpiece with these carefully selected ingredients.

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The beef cut is critical here. London broil (typically top round) has the right fiber structure for pressure cooking—it breaks down beautifully without turning mushy. Look for well-marbled pieces at the meat counter, about 1 to 1.5 inches thick. Costco often carries pre-trimmed options at a good price. For best results, take the meat out of the fridge 30 minutes before cooking to ensure even searing.

No apple cider vinegar? White vinegar or lemon juice works in a pinch. Out of beef broth? Water plus bouillon cube is a solid substitute. The butter can be swapped for ghee or avocado oil if avoiding dairy. Fresh herbs like thyme or rosemary can replace the dried versions at triple the amount. Just avoid any added sugars in broths or seasoning blends to keep it strictly keto.

Store raw beef in the coldest part of your fridge for up to 3-4 days, or freeze for 6-12 months. The finished dish keeps well refrigerated for 4-5 days—the flavors actually deepen. Reheat gently in the au jus to prevent drying out. Leftovers make incredible low-carb sandwiches or salads.

Step-by-Step Instructions for Keto London Broil in Instant Pot

This method delivers perfectly tender beef with minimal effort and maximum flavor.

Step 1: Season and Sear the London Broil

Pat the 2 lb London Broil dry with paper towels to ensure a good sear. Rub it evenly with 1 tsp Kosher Salt, 1 tsp Black Pepper, 1 tsp Garlic Powder, 1 tsp Onion Powder, 0.5 tsp Dried Rosemary, and 0.5 tsp Dried Thyme. Press the seasoning into the meat so it adheres well.

Set your Instant Pot to the sauté function and add 1 tbsp Olive Oil. Once hot, sear the London Broil for 3-4 minutes per side until deeply browned. This step builds a flavorful crust that enhances the final dish. Remove the beef and set aside.

Step 2: Deglaze and Build the Pressure Cooking Liquid

Pour 1 cup Beef Broth and 1 tbsp Apple Cider Vinegar into the Instant Pot. Use a wooden spoon to scrape up all the browned bits from the bottom—this is where much of the flavor resides. These bits will dissolve into the liquid, creating a rich foundation for the cooking process.

Return the seared London Broil to the pot along with any accumulated juices. The liquid should cover about half of the beef. This ensures even cooking and prevents the meat from drying out during the pressure cycle.

Step 3: Pressure Cook to Tender Perfection

Secure the lid on the Instant Pot and set the valve to sealing. Cook on high pressure for 20 minutes. The pressure cooking process breaks down the tough fibers in the London Broil, transforming it into fork-tender beef without the need for hours of slow cooking.

Once the cooking cycle completes, allow the pressure to release naturally for 10 minutes, then manually release any remaining pressure. This gradual release prevents the meat from toughening and ensures it retains moisture.

Step 4: Finish with Butter and Rest

Transfer the London Broil to a cutting board and tent loosely with foil. Stir 2 tbsp Butter into the cooking liquid in the Instant Pot until melted. This enriches the au jus, giving it a silky texture and added depth of flavor.

Let the beef rest for 10 minutes before slicing thinly against the grain. Resting allows the juices to redistribute throughout the meat, ensuring every bite is juicy and flavorful.

Step 5: Serve with Au Jus and Garnish

Slice the London Broil against the grain into thin strips and arrange on a serving platter. Spoon the buttery au jus from the Instant Pot over the top. This liquid gold is packed with savory, herby goodness that complements the beef perfectly.

Garnish with 2 tbsp Fresh Parsley for a pop of color and freshness. The parsley adds a bright note that balances the richness of the dish. Serve immediately while hot for the best experience.

Best Sauces and Condiments for keto london broil recipe instant pot

Classic Chimichurri

This bright, herbaceous sauce cuts through the richness of the beef beautifully. Blend 1 cup fresh parsley, ¼ cup fresh cilantro, 3 garlic cloves, ¼ cup olive oil, 2 tbsp red wine vinegar, and ½ tsp red pepper flakes until chunky. It adds freshness without compromising keto. 🌿

Creamy Horseradish

Mix ½ cup sour cream, 2 tbsp prepared horseradish, 1 tsp Dijon mustard, and ½ tsp Worcestershire sauce. The bold kick enhances the beef’s depth. I love this with London broil—it’s tangy with just the right amount of heat.

Garlic Butter Sauce

Melt 4 tbsp butter with 2 minced garlic cloves, 1 tsp fresh rosemary, and ½ tsp lemon zest. Drizzle over sliced beef for an indulgent finish. The Instant Pot’s au jus pairs perfectly with this. 🧈

Spicy Mayo

Combine ½ cup mayonnaise, 1 tbsp sriracha, and 1 tsp lime juice. This creamy, spicy condiment adds a modern twist. It’s my go-to for a quick, flavorful boost.

Au Jus Reduction

Simmer the leftover cooking liquid from the Instant Pot for 5-7 minutes until slightly thickened. Strain and serve as a dipping sauce. It’s packed with concentrated beefy flavor and zero carbs.

Frequently Asked Questions