It's called Rouladen - Here's one recipe. I'd use beef broth instead of bouillon:

1 1/2 pounds flank steak
German stone ground mustard, to taste
1/2 pound thick sliced bacon
2 large onions, sliced
1 (16 ounce) jar dill pickle slices
2 tablespoons butter
2 1/2 cups water
1 cube beef bouillon

Cut the flank steak into thin filets; about 1/4 inch thick and 3 inches wide.
Generously spread one side of each filet with mustard to taste. Place bacon, onions and pickle slices on each filet and form into a roll. Use string or toothpicks to hold the roll together.

Heat a skillet over medium heat and melt butter. Place the rolls in the butter and saute until browned.

Pour in 2 1/2 cups of water and add the bouillon cube; stirring to dissolve the bouillon cube. Simmer the rolls for about an hour.

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More recipes:
Rouladen Recipes Using Pickles