Cut Top Third Off Loaf Of Bread; Hollow Out Enough Bread From The Bottom To Make Room For Cheese. Cube Removed Bread; Set Aside. Using A Knife, Make 2-In. Cuts Into Loaf Around Edge Of Bread At 1-In. Intervals. Spread Inside Of Bread With Butter. Combine The Chili Powder, Sugar, Garlic Powder And Mustard; Sprinkle 2 Teaspoons Into Loaf. Top With Cheese; Sprinkle With Remaining Spice Mixture. Replace Bread Top. Transfer To An Ungreased Baking Sheet. Bake At 350