Preheat oven to 350°F and lightly grease a square pan or line it with parchment paper.
In a large bowl, add the dry ingredients. 1 ¾ cup all-purpose flour, 1 tsp baking powder, 1 cup sugar, ½ cup cocoa powder, ¼ tsp salt. Mix ingredients.
In a small separate bowl, add the wet ingredients.1 cup milk, ½ cup cooking oil, 1 tsp vanilla extract. Mix ingredients.
Make a well in the center of the dry ingredients and pour the wet ingredients in. Mix to form brownie batter.
Pour the batter into the greased pan - it will be sticky. Run a spatula under water, then use it to help spread the batter to the edges.
Sprinkle ½ cup chocolate chips on top and bake for 30 minutes. Let cool for 20 minutes before slicing into squares. If you want chocolate chips to harden, place them in the fridge to cool completely before slicing. Serve and enjoy!
Recipe Notes:
How to store leftoversRefrigerate - Place in an airtight container or zip-top bag and store at room temperature or in the fridge for 4-5 days.Freeze - Place each brownie slice on a baking sheet in the freezer for 1-2 hours. Once they're slightly frozen, you can pop them into a freezer bag and freeze up to 3 months. The baking sheet method prevents them from sticking together.Reheat - Heat in the microwave using intervals of 15-20 seconds until heated.