Spread butter on one side of a slice of bread. Place on panini maker or in skillet over medium heat.

Layer two slices of cheese on top of bread. Top with several jalapenos.

Layer 4 ounces of roast beef on top of jalapenos.

Layer more jalapenos on top of roast beef.

Add two more slices of cheese.

Spread butter on a second slice of bread. Top sandwich with bread, butter side up.

Follow panini maker instructions to grill sandwich, or allow to brown slightly in skillet (4-5 minutes) then flip over and continue to cook for an additional 3-4 minutes.

Continue with second sandwich.