1/2 c. shortening
1/2 c. butter
2 1/4 c. all-purpose flour
3/4 c. sugar
3/4 c. packed brown sugar
2 (2 oz.) sq. unsweetened chocolate, melted and cooled
2 eggs
1 tsp. baking soda
1 tsp. vanilla
2 c. coarsely chopped peanut butter cups (Reese's cups)

In a large mixing bowl beat shortening with butter with an electric mixer on medium to high speed about 30 seconds or until softened. Add about half the flour to the shortening mixture. Add sugar, brown sugar, unsweetened chocolate, eggs, baking soda and vanilla; beat until thoroughly combined, scraping the sides of the bowl occasionally. Beat or stir in remaining flour. Stir in chopped peanut butter cups.