Prepare baking sheets by spraying with non-stick spray.
Mix 1 c peanut butter, 1 c brown sugar and egg in mixing bowl with wooden spoon until well combined.
Put remaining brown sugar on a plate or shallow bowl.
Form dough into 12 balls.
Roll each ball in sugar coating it and place at least 2" away from one another on baking sheet.
Flatten each ball to 3/4" thick using the palm of your hand.
Using the back of the fork, make an "X" in each cookie flattening a little further.
Bake in preheated oven for 10-12 minutes. Rotate sheet trays halfway through for even baking.
Allow to cool for 5 minutes on sheet trays before placing on cooling rack to cool completely.
Store in an air tight container.
Notes
Commonly Asked Questions:Q1. Can I use crunchy peanut butter?A. YES! Crunchy works just the same! Q2. Can I use other nut butters?A. I haven't tried all nut/plant based butters but most will work just fine. As long as they have a similar oil content the cookies will turn out fine. If they don't have much oil the cookies will be dry and brittle.Q3. Can I use granulated sugar?A. YES! The recipe is the same with granulated sugar.Q4. Can I use brown sugar in the dough and roll them in granulated?A. YES! That's how I usually do mine as well. Q5. Can I use flaxseed instead of an egg?A. YES! I have done this before as well! They may not be quite as soft but they will be VERY close!Q6. What can I add to this recipe to give it a little something extra?A. The most popular choices are to mix in a cup of chocolate chips or to skip the fork "X" and push a Hershey Kiss into the center after they are removed from the oven.