There has been a variation of this all over blogland, and all sound wonderful. But none say anything about make and freeze. I want stuff in my freezer and ready for a party, Super Bowl, football night, or soup and sandwich night. If freezing, package these in 12 portion, single layer foil packages, ready for the oven.
This is an older recipe from the 80's.
Hot Ham and Cheese Rolls
1 cup butter, softened
3 tablespoons dry mustard
3 tablespoons poppy seeds
1 medium onion, diced finely
1-2 teaspoons Worcestershire sauce
4 packages (12-each) party rolls
12-16 ounces Swiss Cheese, sliced thinly
12-16 ounces good baked deli ham, sliced thinly
Mix first 5 ingredients well. Spread on rolls. Cut ham and cheese to sort of fit rolls. Place one slice of each on each roll. If you have leftovers give a few of the rolls extra. Wrap in foil. Heat at 400 degrees F for 10 minutes. If frozen heat for 20 minutes.