Preheat oven to 350F.

Cream together brown sugar with butter and shortening until smooth.

Add eggs and extract, mixing in.

Sift together the flour and baking soda, gradually adding to form a smooth batter.

Fold in crushed potatoes and candy.

Drop by tablespoonfuls or using a cookie scoop onto a parchment paper or silpat lined baking sheet, about 12 to a sheet.

Bake for 12-15 minutes until lightly browned around the edges.

Cool completely before storing.