1.Preheat The Oven Broiler. Lay Out The Bread On A Baking Sheet. 2.Broil The Bread Until Lightly Toasted, 2 To 4 Minutes. Carefully Turn The Bread Over On The Baking Sheet And Place Back Under The Broiler To Lightly Toast The Other Side, 2 To 4 Minutes. 3.Take The Bread From The Oven And Spread 2 Tablespoons Of Hummus On Each Piece. Lay The Apple Slices On Top Of The Hummus And Sprinkle The Cheese Over The Apples. 4.Broil The Sandwiches Open-Faced Until The Cheese Is Melted And Bubbly, 3 To 4 Minutes. Sandwich Two Slices Of Bread Together, To Make Four Sandwiches.