Halloween Graveyard Brownies

For Brownies:

Preheat oven to 350 degrees. Grease the inside of an 8 inch square baking pan. Combine butter and chocolate in a small saucepan over low heat and melt until smooth, stirring frequently. Scrape the melted chocolate mixture into a medium bowl. Add sugar, eggs and vanilla and beat just until blended-don't overbeat. Stir in the flour and walnuts. Spread the batter evenly in the prepared pan. Bake brownies 30 minutes. Transfer the pan to a rack and cool completely.

For Frosting:

Combine the shortening and vanilla in a medium bowl and beat 30 seconds. Add 1/2 the powdered sugar and milk and beat until smooth. Beat in the remaining powdered sugar. Stir in the green food coloring to form a grass colored tint.

Assembly:

Frost the top of the brownies evenly with the frosting from above. Cut the brownies in 1/2 crosswise then cut across the first slice to form 10 rectangular bars. Remove the individual brownies from the pan. With a warm knife, cut off 3 sides of each peanut butter cup to form tombstones. Pipe R.I.P., etc. onto the face of the tombstones with frosting if desired. Stick the tombstones into the frosting at 1 long edge on each brownie. Press some of the marshmallow pumpkins into the frosting around the tombstones. Store in an airtight container until ready to serve.