Hot Roast Beef Sandwiches in Big Batches to Serve Now or Freeze, Great "Game Day" Fare to Make Ahead

I love these make ahead sandwiches and this roast beef dandy is the second one I am sharing with you.  I prepare them for pitch in dinners, game days, tail gating, freeze them for later, and bake some now and store in the refrigerator for later in the week.  Ree Drummond, The Pioneer Woman, inspired these on her program over this past weekend although I have adapted them for my families tastes.

The first one I featured is made with deli ham and is a family favorite too.  Here is the link if you would like to check them out.  thehiddenpantry.blogspot.com/2010/09/canadian-cheese-soup-game-day.html

Ingredients for Hot Roast Beef Sandwiches:

1/4 C. mayonnaise
1/4 C. coarse deli style mustard
3 T. poppy seeds
1 small red onion grated, about 1/4 C.
2 t. horseradish
good shake of Worcestershire sauce
12 stadium style buns separated and opened (I used large soft buns.)
2 pounds thinly sliced or shaved roast beef
8 ounces Colby Jack cheese sliced
8 ounces fresh mozzarella cheese sliced

Mix together the first 6 ingredients in a small bowl until well blended and adjust ingredients to taste. 

Set up an assembly line of open buns and spread the sauce over all of the tops and bottoms of the buns.

Next slice and break the Colby Jack cheese fitting to the bottom bun stopping inside of the edge. 

 Distribute the roast beef generously atop the the cheese topped bottom buns.

Top with a slice of the fresh Mozzarella cheese.  You do not need a large piece as it is soft and will really melt and spread.

Top with the remaining bun tops and wrap each sandwich in a square of aluminum foil.

Store in plastic bags in the refrigerator and bake later or double wrap and freeze for later.

I did both!  I baked a couple and served them for supper with a side of fresh made Cole slaw and bagged the rest for later.

To bake preheat the oven to 350 degrees F.   Place the foil wrapped sandwiches on a baking sheet and bake for 25 minutes for large sandwiches less if you have made sliders!  Serve and enjoy.  Yield 12 very large hot roast beef sandwiches.