花生巧克力蛋糕 Peanut Butter Chocolate Cake

父親節，先生點的蛋糕， 花生巧克力蛋糕 Peanut Butter Chocolate Cake。

食譜源自Joy of Cooking
Peanut Butter Cupcake:
Combine in a food processor

1 ¼  cups all purpose flour

¾ cup packed light or dark brown sugar

1 ½ teaspoons baking powder

½ teaspoon salt

¾ cup milk

1/3 cup creamy peanut butter

1 large egg

1 table spoon unsalted butter, softened

1 tablespoon vegetable oil

1 teaspoon vanilla

¾ cup semisweet chocolate chips

Pulse for a few seconds to mix. 350 ℉，25-30 minutes. 

我把它烤成9吋蛋糕 ，40-45分鐘。請依您的烤箱加以調整時間。