Cut dough into 12 squares. Gently press squares into 12 ungreased mini muffin cups, shaping edges to form rims 1/4 inch high. Spoon cheese evenly into dough-lined cups. Top each with onions and pimientos. In small bowl, beat egg and whipping cream with wire whisk or fork until blended. Spoon slightly less than 1 tablespoon mixture into each cup.