BBQ (Or Broiled) Flank Steak Sandwiches

Prep Time
Cook Time
Ready In

"Delicious peppery watercress, horseradish and steak sandwich, (Marinating time not included in prep time.)"

Original recipe yields 4 servings
  • And fillers


  • Serving Size: 1 (338.2 g)
  • Calories 502.3
  • Total Fat - 27.2 g
  • Saturated Fat - 7.8 g
  • Cholesterol - 126.2 mg
  • Sodium - 483.6 mg
  • Total Carbohydrate - 21.1 g
  • Dietary Fiber - 2.6 g
  • Sugars - 4.1 g
  • Protein - 41.3 g
  • Calcium - 113.6 mg
  • Iron - 4.2 mg
  • Vitamin C - 80.8 mg
  • Thiamin - 0.3 mg

Step 1


Step 2

Whisk together Marinade ingredients in a small bowl, place in a zip top plastic bag; add flank steak. Seal the bag and massage the marinade all over the steak. Refrigerate for at least 3 hours, preferabley overnight.

Step 3

Horseradish sauce:

Step 4

In a small bowl, whisk together sour cream , mayonnaise, horseradish and mustard.

Step 5

Season with salt and pepper to taste.

Step 6

Cover with plastic wrap; refrigerate while preparing steak.

Step 7

In a small bowl mix roasted red peppers, garlic and basil leaves, set aside.

Step 8

Heat broiler, if using, with rack 6 inches from heat.

Step 9

Remove steak from marinade; shake off excess marinade and place on a roasting pan fitted with a rack, if broiling.

Step 10

BBQ or broil 6 minutes on each side for medium rare. Let rest 5 minutes before slicing 1/4 inch thick against the grain.

Step 11

Place watercress or cilantro in a bowl; toss with oil and the lemon juice. Season with salt and pepper.

Step 12

Toast bread slices; place 1/4 watercress mixture on bottom slice of toast; place 1/4 of steak slices over watercress; drizzle horseradish sauce over steak; place 1/4 of roasted red pepper mixture over sauce; top with second slice of toast. Repeat for 4 sandwiches.

Step 13


Tips & Variations

No special items needed.



Watercress was perfect with the horseradish sauce and WoW, what a great sub this made! I used no fat Greek Yogurt and Horseradish Sauce together for the sauce, and it was so yummy on the steak! We will enjoy them again with chips or fries every chance we get!

review by:
(19 Apr 2021)


these are wonderful! I made this a little different from the way it was posted. I marinated the steak with the marinade as suggested -- wonderful! I skipped the sauce. Grilled the steak and in a grill pan grilled 1 bell pepper, a pkg of mushrooms and half and onion. We added cheese and piled the sliced steak on the sandwich buns with cheese, steak and the veggies -- great dinner which everyone enjoyed. Thanks for sharing!

review by:
(11 Jul 2020)