Chocolate chip and peanut butter cookies

I've never baked in my life but have been making these lately - they're easy to make and they're YUMMY!
Method says to use a mixer but I beat it all by hand and they turn out just fine.

INGREDIENTS
170g unsalted butter
105g light brown sugar
100g granulated white sugar
1 large egg
1 tsp vanilla essence
185g peanut butter (crunchy is best )
280g plain flour
1/2 tsp baking powder
100g chocolate chips

METHOD
Preheat oven to 350F / 180C.

In the bowl of your electric mixer (or with a hand mixer) cream the butter and sugars until light and fluffy.
Beat in the peanut butter.
Add the egg and vanilla essence and beat to combine.
In a seperate bowl whick together the flour and backing powder. Add to the peanut butter mixture and beat until incorporated.
Fold in the chocolate chips.

Roll the mixture into 1 inch balls and place on baking sheets about 2 inches apart. Make a criss-cross pattern on the top of each one with a fork.

Bake for about 10-12 minutes.

Remove, allow to cool, and ENJOY!!

Yum they sound good, will have to give them a go. How did yours turn out Weegee??
Thanks for conversions