In a large saucepan, melt butter and marshmallows over low heat, stirring until melted. Stir in cocoa powder and chocolate or vanilla extract. Remove from heat. (This step can be completed in the microwave).
While still warm, stir in Rice Krispies and raisins/cherries/Craisins/ or almonds (choose one). Continue to stir until all ingredients are well mixed and coated.
Spray a 13 x 9 x 2 inch baking pan with Pam or other non-stick spray (or just brush the pan with butter). Press the still warm mixture into the pan using a silicone spatula or the buttered back of a large spoon.
Allow to cool and cut into 2 inch squares.
