Eggless Double Chocolate Cookies

Ingredients:
Softened Butter – 10 tbsp
Powdered Sugar – 1/2 cup
All-Purpose Flour – 1 cup
Unsweetened Cocoa Powder – 2 tbsp
Baking Powder – 1 tsp
Vanilla Extract – 1 tsp
Chocolate Chips – 1/4 – 1/2 cup (optional)