Easy Roast Beef Potluck Rolls

Ingredients

• 1 pound thinly sliced reduced-sodium deli roast beef
• 1 package (12 ounces) Hawaiian rolls
• 1/4 cup cream-style prepared horseradish
• 6 slices reduced-fat provolone cheese
• 1/3 cup butter, melted
• 2 tablespoons Worcestershire sauce
• 1 tablespoon dried parsley leaves
• 2 teaspoons packed light brown sugar
• 1/4 teaspoon onion powder