For the Roast Beef:
2 1/2 pounds top round roast
3 cloves garlic, thinly sliced lengthwise
2 tablespoons olive oil
1 tablespoon salt
1 tablespoon freshly ground black pepper
1 teaspoon fresh thyme
1 cup beef broth
For the Rolls:
4 kaiser or hamburger rolls
1 tablespoon caraway seeds
1 tablespoon salt
1 large egg, beaten
For the Horseradish Sauce:
1 tablespoon prepared horseradish
1/3 cup mayonnaise
1/2 teaspoon garlic powder