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1
Preheat oven to 350F Lightly grease or line a baking sheet with parchment paper.
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2
In a small bowl, whisk together flour, baking powder, baking soda, and salt.
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3
In a large bowl, cream peanut butter and butter with an electric mixer until smooth.
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4
Add the sugars and beat until light and fluffy.
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5
Add the egg and vanilla and beat until well incorporated.
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6
Add the dry ingredients and mix until just combined.
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7
Scoop tablespoonfuls of dough and form into balls.
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8
Roll them in granulated sugar to coat.
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9
Place them on the prepared baking sheet.
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10
Indent each ball with the back of a wooden spoon.
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11
Bake in preheated oven until puffy, about 8 minutes.
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12
Remove from the oven and quickly re-dent the centers of the cookies with the back of the wooden spoon.
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13
Return to the oven to continue baking for 3-5 more minutes, until golden on the edges.
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14
Remove from the oven to cool on a wire rack.
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15
Once the cookies have cooled, fill the centers with a teaspoonful of jam.
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16
Cookies will keep stored in a airtight container at room temperature for about a week.
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17
Makes 24-36 cookies.