Peanut Butter Pistachio Cookie Sandwiches with White Chocolate Buttercream

I'm a big sweet and salty fan. If you are, these cookies are SO for you.
The savory peanut butter, salty pistachio, and sweet white chocolate buttercream combo is TO-DIE-FOR!

P.S: you can totally use whatever your favorite PB cookie recipe is. I was just feeling lazy and didn't want to pull out the flour, baking soda, etc...

Peanut Butter Pistachio Cookie Sandwiches
1 cup smooth peanut butter
1 cup sugar
1 Tbsp. molasses
2 Tbsp. honey
1 egg
1/2 cup shelled, salted pistachios

Mix all ingredients together except for pistachios on medium high.
Add in pistachios, and mix in on low.
Put dough in the fridge an pre-heat your oven to 375.
When oven is pre-heated, remove dough, and shape into tablespoon-ish sized balls.
Place on a greased baking sheet 1 inch apart, and flatten each dough ball with a fork in a  criss-cross pattern.
Bake for 7-9 minutes, until edges are lightly browned.

White Chocolate Buttercream
1/2 cup butter
3 cups powdered sugar, divided
1 cup white chocolate chips
1 Tbsp. butter
1 Tbsp. vanilla extract

Rinse out your mixing bowl, and mix butter and 2 cups of powdered sugar together o medium low until they come together.
While that is mixing, melt your white chocolate chips at 20 second intervals with the butter. This should only take 2 times.
When Butter and powdered sugar are mixed together, slowly add in the melted white chocolate.
Turn mixer up to high for 30 seconds before adding in the last cup of powdered sugar and tablespoon of vanilla.
Mix for 30 more seconds and refrigerate until you're ready to make your sandwiches!
Scoop out Tablespoon sized scoops of your frosting and roll into balls. Sandwich between cooled cookie halves!

*If you want to halve the buttercream frosting im sure that would be fine, cause It made more than enough! Extra frosting is never an issue around here though, and I would encourage loading the cookies up with it!