How to make oat-pistachio cookies step by step

Step 1 - preparations

• If you have pistachios in shells, you must shell them beforehand (I'm giving the weight of pistachios without shells!).
  aprox. 100 g pistachios
• Turn on the oven to top and bottom heating at 180℃ or convection at 170℃.
• Mix together the flour, rolled oats, and baking powder.
  150 g all-purpose flour, 110 g rolled oats, 1 teaspoon baking powder
  
• Line a large baking sheet from the oven with parchment paper.

Step 2 - preparing oat cookies with pistachios

• Mix together butter, pistachio cream, and sugar - just mix until combined.
  70 g butter, 100 g pistachio spread, 100 g sugar
  
• Add the egg and mix briefly.
  1 egg
  
• Pour in the flour with oat flakes and mix on low speed with a mixer, or stir with a spoon.
  
• Add the chopped pistachios to the bowl.
  aprox. 100 g pistachios
  
• Mix the dough with a spoon.
  

Step 3 - shaping pistachio cookies

• Scoop portions of dough with a large spoon.
  
• Roll it into balls in your hands - mine came out roughly the size of a ping-pong ball.
  
• Arrange the cookies on a baking sheet, leaving space between them.
• Lightly flatten each cookie with the heel of your hand.
  

Step 4 - baking oat-pistachio cookies

• Place the baking sheet with cookies into the preheated oven - on the middle rack - and bake them for about 15 minutes - until nicely browned.
• After baking, cool the cookies for about 10 minutes and then you can essentially eat them :)