Unroll and stack remaining 2 pie crusts on lightly floured surface. Roll to 17x12-inch rectangle. To make lattice top, cut 1/2-inch-wide strips with pastry cutter or knife. Place half of the strips across pan diagonally. Weave remaining strips with first strips to form lattice. Trim edges of strips even with edge of bottom crust. Pinch edges of crust together to seal, tucking under pastry crust, if necessary. Flute or crimp edges. Brush with beaten egg. Sprinkle with remaining 2 teaspoons sugar.