Party Ham Sandwiches - cooking recipe

Ingredients

1 cup butter, softened
1 small onion, minced
1 tablespoon poppy seed
2 teaspoons Dijon mustard
1 teaspoon Worcestershire sauce
5 (7 1/2 ounce) packages party rolls
1 lb thinly sliced ham, chopped
12 ounces swiss cheese, grated

Preparation

Beat butter and next 4 ingredients at medium speed with an electric mixer until blended.
Using an electric knife split party rolls horizontally without seperating; spread butter mixture evenly over bottom halves. Top with ham, cheese, and remaining halves of rolls.
Bake at 350 degrees for 15 minutes.