Preheat the oven to 375°F (190°C).
In a bowl, mix together peanut butter, sugar, and egg until well combined.
Roll the mixture into 1-inch balls.
Place the balls on a baking sheet lined with parchment paper.
Bake for 10-12 minutes until the edges are lightly golden.
Immediately press a chocolate kiss into the center of each cookie after removing them from the oven.
Allow the cookies to cool on the baking sheet for 5 minutes.
Transfer cookies to a wire rack to cool completely.
Optionally, sprinkle with sea salt before serving.
Enjoy your delicious peanut butter blossoms!