Recipe For Leftover London Broil: Savory Reinvention for New Meals

Leftovers deserve better than a sad microwave reheat. I developed this method after too many dry, overcooked London broil revivals that wasted good meat.

Thin slicing against the grain is your first defense against toughness. Then, a quick sear in a hot pan with a splash of beef broth restores moisture and flavor without overcooking.

This approach transforms yesterday’s dinner into today’s tender, flavorful foundation. Use it for sandwiches, stir-fries, or salads that taste intentional, not like an afterthought.

No special tools required—just a sharp knife and 5 minutes of attention. The results will change how you view leftovers.

Ingredients for Recipe for Leftover London Broil

Transform yesterday’s dinner with these bold, savory ingredients for a completely new meal.

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The London broil is the star here—look for well-marbled, previously cooked cuts that still have some pink inside. Most grocery stores sell it pre-sliced, but if you’re working with a whole piece, slice against the grain for maximum tenderness. I grab mine from Whole Foods or Costco when they have good sales. The beef broth should be low-sodium so you can control the seasoning yourself.

No Worcestershire sauce? Soy sauce plus a pinch of sugar mimics the depth (use half the amount). Fresh out of Dijon? Whole-grain mustard works—just strain out the seeds if you want it smooth. The sourdough can be any sturdy bread—ciabatta, baguette, even a good whole wheat. For the greens, baby spinach or kale swap in easily if arugula isn’t your thing.

The seared London broil holds up well for 3-4 days in the fridge. Store it in an airtight container with a paper towel to absorb moisture. Assemble sandwiches just before eating to keep the bread crisp. This method also freezes beautifully for up to 3 months.

Step-by-Step Instructions for Leftover London Broil

Transform last night’s leftovers into something extraordinary with these simple, flavor-packed steps.

Step 1: Slice and Sear the Leftover London Broil

Begin by slicing the 1.5 lb Leftover London Broil thinly against the grain—this shortens the muscle fibers for maximum tenderness. Heat 1 tbsp Olive Oil in a large skillet over medium-high heat until it shimmers but doesn’t smoke.

Add the sliced beef in a single layer and sear for 1-2 minutes per side until just warmed through and lightly browned. You’re not cooking it further, just reviving its texture and enhancing flavor. Sprinkle with 0.5 tsp Kosher Salt and 0.5 tsp Black Pepper as it sears.

Step 2: Create the Garlic-Infused Broth

In the same skillet, reduce heat to medium and add the remaining 1 tbsp Olive Oil. Sauté the 3 cloves Garlic Cloves (minced) for 30 seconds until fragrant but not browned—burnt garlic turns bitter.

Pour in the 0.5 cup Beef Broth and 1 tbsp Worcestershire Sauce, scraping up any browned bits from the bottom of the pan. Simmer for 2-3 minutes until the liquid reduces slightly and takes on a rich, savory aroma. This becomes the base for your sandwich spread or salad dressing.

Step 3: Prepare the Creamy Mustard Spread

In a small bowl, whisk together the 0.25 cup Mayonnaise and 1 tbsp Dijon Mustard until smooth. The mustard’s sharpness cuts through the richness of the mayonnaise, creating a balanced spread that complements the beef beautifully.

Taste and adjust seasoning if needed, though the Dijon and mayo combination should be perfectly tangy on its own. This spread works wonderfully on sandwiches or as a dip for the beef slices.

Step 4: Assemble the Sandwiches

Toast the 4 slices Sourdough Bread until golden and crisp. Spread a generous layer of the mustard-mayonnaise mixture on each slice. Divide the seared beef evenly among two slices, then top with the remaining bread to form sandwiches.

For extra texture and freshness, add a handful of 2 cups Arugula, 0.5 whole Red Onion (thinly sliced), and 1 cup Cherry Tomatoes (halved) between the beef and the top slice of bread. Press down gently and slice in half diagonally for serving.

Serving Suggestions for This Dish

Sandwich Creations

Turn your meat into incredible open-faced sandwiches by piling it high on toasted sourdough. I spread the Dijon-mayo mix thickly on the bread first—it soaks into the toast just enough. Add arugula and tomatoes for freshness that cuts through the richness. 💛

Salad Topper

Slice the beef into thin strips and arrange over 2 cups arugula with red onion and cherry tomatoes. Drizzle with the warm garlic-beef broth from the pan—it acts like a dressing. The peppery greens balance the meat beautifully.

Stir-Fry Upgrade

Chop the beef into bite-sized pieces and toss into a hot wok with veggies. The seared edges from your pan work add depth to the dish. I love this with bell peppers and snap peas for a quick weeknight meal.

Breakfast Hash

Dice the meat and crisp it in a skillet with potatoes and onions. The beef’s bold flavor stands up to the hearty potatoes. Top with a fried egg for a Sunday brunch that feels like a hug on a plate. ⚡

Quesadilla Filling

Layer the sliced beef with cheese between tortillas and grill until crispy. The Dijon spread makes an unexpected but delicious dipping sauce. Use provolone or cheddar for best melt.

Frequently Asked Questions