Potato Candy

Potato Candy:

2 medium potatoes
1 stick (1/2 cup) butter, chopped
2 16 ounce boxes powdered sugar
1 teaspoon vanilla extract (or almond, actually, if you really wanted faux-marzipan)
2-3 tablespoons peanut butter
1-2 tablespoons cocoa powder

Other Mammo-Graham materials:

6 regular graham cracker rectangles, each broken into 2 squares
6 chocolate graham cracker rectangles, each broken into 2 squares
about 1/4 cup milk chocolate chips
about a dozen pink M&Ms, preferably both plain and peanut