Bbq (or Broiled) Flank Steak Sandwiches

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

• Ready In: 27 mins
• Serves: 4

Ingredients

• Marinade

• 1  tablespoon grainy mustard
• 1  garlic clove, smashed
• 1⁄4 teaspoon pepper
• 1⁄4 cup red wine vinegar or 1⁄4 cup fresh lemon juice
• 2  tablespoons olive oil
• 1  teaspoon dried basil
• 1  tablespoon  hot  creamed horseradish
• 1 1⁄2 lbs  flank steaks

• Horseradish sauce

• 1⁄4 cup sour cream (we use no fat) or 1⁄4 cup plain yogurt (we use no fat)
• 1⁄4 cup mayonnaise (we use light mayonnaise)
• 2  tablespoons  prepared horseradish (we like hot creamed)
• 1  tablespoon grainy mustard
•  salt & freshly ground black pepper
• 2  roasted red peppers, rough chopped (we used bottled)
• 1  garlic clove, smashed
• 4 -6  fresh basil leaves, rough chopped
• 1  bunch watercress or 1  bunch fresh cilantro, tough stems trimmed
• 1  tablespoon fresh lemon juice
• 1  tablespoon extra virgin olive oil
• 4  slices  bread, thick sliced and toasted

Directions

1. Marinade:
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.
3. Horseradish sauce:
4. In a small bowl, whisk together sour cream , mayonnaise, horseradish and mustard.
5. Season with salt and pepper to taste.
6. Cover with plastic wrap; refrigerate while preparing steak.
7. In a small bowl mix roasted red peppers, garlic and basil leaves, set aside.
8. Heat broiler, if using, with rack 6 inches from heat.
9. Remove steak from marinade; shake off excess marinade and place on a roasting pan fitted with a rack, if broiling.
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.
11. Place watercress or cilantro in a bowl; toss with oil and the lemon juice. Season with salt and pepper.
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.
13. Enjoy!