Roast beef sliders

My husband and I made a resolution to entertain more, and we invited our neighbors over for an Oscar Party. Chris suggested we make roast beef sliders and a heavy appetizer since the party started at 7 pm. Easy (my new favorite recipe adjective), elegant, delicious —.an inspired suggestion. Will definitely bring these to parties in the future!

Roast beef sliders
24 slider hamburger buns
2 lb. deli roast beef
1 lb. horseradish cheese
2 sweet vadalia onions chopped and sautéed
2 T. Melted butter

Prepare roasting pan with cooking spray to avoid sticking
Place the slider bottoms in a roasting pan.
Layer cheese, roast beef, onions, cheese onions each bun
Place tops on each sandwich, brush butter on each sandwich
Cook for 20 minutes in oven preheated to 350 degrees