Now, in a separate bowl add 1 cup of softened unsalted butter, 3/4 cup granulated sugar, and 3/4 cups of golden brown sugar. Using an electric hand mixer, beat that on medium-high speed for about 1 minute or until the butter and sugar are well-creamed together. 
Next, add 1 large egg and 1 egg yolk, along with 1 teaspoon of vanilla extract. Beat again until well combined.
Now add 1 cup of creamy peanut butter to the butter and sugar mixture. And combine once more at high speed.
Sift 1 1/2 cups of all-purpose flour, 1 teaspoon baking powder, 1 teaspoon baking soda, and 1 teaspoon salt into a large bowl. Then set it aside.
Then, add the sifted flour mixture to the cookie dough and gently mix it in using a spatula. Mix until no more dry patches of flour are visible.
Scoop out mounds of the cookie dough using a medium trigger release cookie scoop. Then place them onto your prepared baking sheet. You can leave them as they are or roll each cookie dough ball into your hand for a prettier baked cookie.
Now add extra semisweet chocolate chips on top of the cookies before baking. I used about 1/2 cup of chocolate chips.
Bake at 350 degrees Fahrenheit for about 10 minutes on the center rack
Video
Notes
Use room temperature eggs- The eggs will blend better with the other ingredients if they are not cold, giving the cookies better texture.
Roll the dough balls in your hand- If you like your cookies nice and round, then roll them with your hand after scooping them so they bake into circles. But this step is optional.
The chocolate chips are optional- If you don't have or want to add the chocolate chips, you can skip them. But these cookies are so much tastier with some chocolate in them, so I recommend not leaving this ingredient out.
Bake on the center rack- The center rack gets the evenest heat distribution, baking your cookies from all sides and ensuring they are cooked just enough, but not too much, which would affect their chewiness.