Season the beef generously with salt and pepper. If desired, use kitchen twine to truss the beef ( see video here ).

Heat the olive oil in a large, heavy skillet. Add the beef and cook 3-4 minutes on each side, or until deeply browned. Transfer the beef from the pan to your crockpot; insert a meat thermometer into the thickest part of the roast. For medium-rare roast beef, cook on LOW until the temperature reaches 140º – about 2.5 hours.

While the beef cooks, prepare your slider rolls: Heat oven to 350º. Remove the dough from the tubes and cut each crosswise into 12 pieces (for a total of 24 pieces of dough). Roll each piece of dough into a ball. Remove the roast from the crockpot and tent with foil. Let sit 20 minutes.

Mix the salt and caraway on a small plate. Gently press the top of each roll into the seasoning mixture, then arrange on a baking sheet, 2 inches apart. Bake for 15-20 minutes or until lightly golden. Remove from oven and let cool. Slice crosswise.

Add water to the drippings that have collected in the bottom of the crockpot. Turn heat to high and bring to a simmer. Remove the twine from the beef. Slice the beef as thinly as you can.

Dip the cut sides of the rolls in the jus. Top with sliced roast beef and a thin schmear of horseradish.