Savor irresistible Peanut Butter and Jelly Cookies, a classic blend of sweet, salty flavors in soft, chewy thumbprints ready in under an hour!
Using a hand whisk, cream the butter and peanut butter together until soft, about 1 minute.
Mix in sugars and beat until light and fluffy, about 2 minutes.
Add in egg, milk, and vanilla and mix well until combined.
Lastly, stir in the dry ingredients and peanuts.
Scoop out a heaped tablespoon of dough, roll into a smooth ball, flatten into a 2-inch (5 cm) disc and arrange 3 inches (7 ½ cm) apart on the baking sheets.