Heat oven to 350°F.

In small saucepan, melt 1 cup chocolate chips over low heat; cool.

In medium bowl, combine flour, baking powder, baking soda and salt; mix well.

In large bowl, beat margarine and sugar with electric mixer until creamy.

Blend in melted chocolate, egg and vanilla.

Gradually add flour mixture; mix well.

Stir in oats and remaining 1 cup chocolate morsels.

Drop by rounded tablespoonfuls onto ungreased cookie sheet.

Bake 12 to 14 minutes or until set.

Cool 2 minutes on cookie sheet; remove to wire rack.

Store tightly covered.