Chocolate Peanut Butter Cheesecake

Directions

1. 1

   In a microwave, melt butter and unsweetened chocolate; stir until smooth. Set aside. In a large bowl, beat brown sugar and eggs until light and fluffy, about 4 minutes. Beat in chocolate mixture and vanilla. Combine flour and baking powder; gradually add to batter and mix well. Stir in chopped chocolate.
2. 2

   Spread 1 cup into a greased 9-in. springform pan. Cover and refrigerate remaining batter. Place pan on a baking sheet. Bake at 350° for 17-19 minutes or until a toothpick inserted in the center comes out clean. Cool on a wire rack for 5 minutes; place in freezer for 15 minutes.
3. 3

   For filling, in a large bowl, beat the peanut butter, cream cheese and brown sugar until smooth. Add eggs and sour cream; beat on low speed just until blended. Spread remaining brownie batter about 1-1/2 in. high around sides of pan, sealing to baked crust.
4. 4

   Pour filling into center. Bake at 350° for 45 minutes or until center is almost set.
5. 5

   For topping, combine sour cream and sugar; spread over filling to within 3/4 in. of edges. Return cheesecake to the oven; turn oven off and let stand for 5 minutes. Cool on a wire rack for 10 minutes. Carefully run a knife around pan to loosen; cool 1 hour longer. Refrigerate overnight. If desired, top with peanuts and drizzle with melted chocolate. Refrigerate leftovers.