Peanut Butter Squares

4 cups sifted powdered sugar
1, 5 1/2 ounce package of graham crackers, crushed (about 1 2/3 cups)
1 cup creamy peanut butter
1 cup butter, melted
1 cup semisweet chocolate morsels, melted

Stir together first 4 ingredients in a medium bowl. Firmly press mixture into a not-greased 13- x 9-inch pan. Spread melted chocolate evenly over cracker layer.

Let stand at room temperature 2 hours or until chocolate is set. Cut into squares.

Note: Layer peanut butter squares between sheets of wax paper or parchment paper, and store in an airtight container up to 1 week, or freeze up to 1 month.