I found this recipe on the Hershey's website. In theory, I'm going to take them with me to work tomorrow for people to eat. However, I might just keep them all for myself because they are very, very tasty. I would definitely make these again.
My changes: I couldn't find the mini-baking-Reese's called for in the recipe so I just used a combo of milk chocolate chips and peanut butter chips. I doubled the recipe, but I still used the same amount of butter (accidentally) and it turned out just fine. If you double the recipe, cook the bars for about 30 minutes rather than 25. Oh and I mixed the chips into the dough before putting it in the pan, rather than doing the layering thing in the recipe.
Chocolate and Peanut Butter Filled Peanut Butter Blondies
3/4 cup REESE'S Creamy Peanut Butter
1/4 cup (1/2 stick) butter or margaine, softened
1/2 cup packed light brown sugar
1/4 cup granulated sugar
2 tablespoons milk
1 teaspoon vanilla extract
1 cup all-purpose flour
1/2 teaspoon baking soda
1/8 teaspoon salt
1-1/3 cups (8-oz. pkg.) REESE'S Milk Chocolate Baking Pieces Filled with Peanut Butter Creme
1. Heat oven to 350 F. Grease 8- or 9-inch baking pan.
2. Beat peanut butter, butter, brown sugar and granulated sugar in large bowl until well blended. Add egg, milk and vanilla; beat well. Stir together flour, baking soda and salt; add to peanut butter mixture, beating until well blended.
3. Spread one half of batter in prepared pan. Sprinkle baking pieces over batter. Drop remaining batter by 1/2 teaspoonfuls over mixture, covering baking pieces.
4. Bake 25 to 30 minutes or until lightly browned. Cool completely in pan on wire rack. Cut into bars. About 16 bars.
Picture added March 28, 2009: