PREHEAT oven to 350° F. Grease two 9-inch-round baking pans or one 13 x 9-inch baking pan.
FOR SPICY CHOCOLATE CAKE:
MICROWAVE morsels in medium, uncovered, microwave-safe bowl on HIGH (100%) power for 1 minute; STIR. Morsels may retain some of their original shape. If necessary, microwave at additional 10 to 15-second intervals, stirring just until morsels are melted.
BEAT granulated sugar, butter and vanilla extract in large mixer bowl until creamy. Add eggs; beat for 1 minute. Beat in melted chocolate. Combine flour, cinnamon, baking soda and salt in medium bowl; beat into chocolate mixture alternately with milk. Stir in jalapeños. Pour into prepared pan(s).
BAKE for 30 to 35 minutes or until wooden pick inserted in center comes out clean. Cool in pan(s) for 20 minutes; invert onto wire rack(s) to cool completely.
FOR RICH CHOCOLATE FROSTING:
BEAT powdered sugar, milk, butter, Choco Bake, vanilla extract and salt in small mixer bowl until mixture is smooth and creamy. Frost cake.
* Follow melting instructions on NESTLÉ® package.