Ingredients

The following ingredients have 8 Servings
  • 1 cup all-purpose flour
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking soda
  • 1/2 cup unsweetened cocoa (regular or Dutch process)
  • 2 ounces good-quality chocolate (chopped (60% or more cocoa content))
  • 1/4 cup canola oil
  • 1 cup granulated sugar
  • 2 large eggs (at room temperature)
  • 2 large egg yolks (at room temperature)
  • 2 teaspoons vanilla extract
  • 1/3 cup sour cream or Greek-style yogurt
  • 1/2 cup warm water
  • 1 teaspoon instant espresso powder
  • 1 cup unsalted butter (softened)
  • 1 cup smooth peanut butter
  • 1 1/2 cups confectioners' sugar
  • 1/8 teaspoon salt
  • 1 teaspoon vanilla extract
  • 2 tablespoons whole milk
  • 4 ounces chocolate (chopped)
  • 4 fluid ounces heavy cream
  • 2 teaspoons vanilla extract
  • 8 full-sized peanut butter cups (unwrapped and each candy cut into 6 pieces)
  • mini-peanut butter cups, for garnish (optional)

Instruction