Place on surface lightly sprinkled with flour blend. Knead gently 4 or 5 times. Place dough on cookie sheet; pat into circle about 1 1/2 inches thick. With sharp knife, cut X across loaf about 1/2 inch deep. Bake at 450°F 5 minutes; reduce heat to 350°F, and bake 25 minutes longer or until golden brown and bottom sounds hollow when tapped. Remove from pan to cooling rack. Cool completely before slicing, about 4 hours. Serve with butter and jam, if desired.