Step 1

In a microwave safe bowl mix together roast beef and gravy. Warm for 2-3 minutes on high. Mix well. Set aside.

Step 2

Spread 1 Tablespoon of Mayonnaise on one side of each of the 8 slices of bread in leu of butter.

Step 3

Heat griddle to medium. Place prepared slices of bread mayonnaise side down.

Step 4

On one half of 4 slices of the bread place two slices of cheese, overlapping slightly.

Step 5

On the other half of the remaining 4 slices of bread place 3/4 cup of prepared roast beef. Make sure meat covers each slice of bread completely.

Step 6

When cheese is melted and the bread is golden brown, carefully place each half on top of the other halves of bread with meat. Press down lightly with spatula. Remove from griddle and cut each sandwich in half. Serve immediately.