Line large rimmed baking sheet with waxed paper. In 4-quart saucepan, melt chocolate chips and nut butter on low, stirring constantly, about 5 minutes.
Place chow mein noodles in a large bowl. Pour chocolate mixture over noodles; stir well to coat.
Onto prepared sheet, drop 2 tablespoons mixture to form mound; repeat with remaining mixture. Shape into nests. Refrigerate until set, about 30 minutes.
To serve, fill nests with chocolate eggs. Makes 24 nests.
