Cut Bread In Half Lengthwise, Then In Half Widthwise. Place Cut Side Up In A Foil-Lined 15-In. X 10-In. X 1-In. Baking Pan. Brush With Butter. Bake At 450 Degrees F For 5 Minutes Or Until Lightly Browned. Spread Marinara Sauce Over Bread. Top With Canadian Bacon, Pineapple, Green Pepper, Onions And Cheese. Bake For 8-10 Minutes Or Until Cheese Is Melted. Cut Each Piece In Half.