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1
Place an oven rack in the center of the oven.
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2
Preheat the oven to 325 degrees F. Spray a 9-by-5-by-3-inch nonstick, metal loaf pan with vegetable oil cooking spray.
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3
Line the bottom of the pan with a 14-by-3 1/2-inch piece of parchment paper.
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4
Spray with vegetable oil cooking spray.
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5
Line the sides of the pan with a 14-by-7-inch piece of parchment paper.
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6
Set aside.
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7
In a small, heavy saucepan, combine the caramel candies and heavy cream over low heat.
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8
Cook, stirring occasionally, until the candies have melted and the mixture is smooth, about 10 minutes.
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9
Set aside to cool slightly.
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10
In a medium bowl, whisk together the flour, baking powder, and salt.
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11
In a stand mixer fitted with the paddle attachment, beat the butter and sugar on high speed until light and fluffy, 2 to 3 minutes.
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12
Reduce the speed to medium and beat in the eggs and vanilla.
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13
With the machine running, gradually add the flour mixture in batches to form a thick batter.
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14
Beat in the peanut butter.
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15
Transfer half of the batter to the prepared pan.
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16
Pour 2 tablespoons of the caramel lengthwise along the center of the batter.
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17
Using the tip of a knife, swirl the caramel sauce into the batter.
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18
Place the remaining batter on top and pour another 2 tablespoons of the caramel sauce lengthwise along the center of the batter.
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19
Swirl the caramel sauce into the batter.
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20
Bake until a cake tester inserted into the center of the cake comes out with moist crumbs, 55 to 60 minutes.
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21
Cool for 10 minutes.
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22
Remove the cake from the pan and peel away the parchment paper.
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23
Cool completely on a wire rack, about 1 hour (center of cake will fall during cooling).
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24
Slice the pound cake and place on a serving platter.
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25
Warm the remaining caramel sauce over low heat.
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26
Drizzle the caramel sauce over the pound cake slices or serve alongside.