Preheat your oven to 350°F and line or spray a mini muffin tin.
cooking spray for muffin tin
To a large bowl, use a hand mixer on high to mix together softened butter and sugar until well-combined (about 2-3 minutes).
½ cup unsalted butter, 1 cup granulated sugar
Add the eggs and vanilla extract and mix on low to combine.
2 large eggs, 2 teaspoons vanilla extract
Add the flour, cocoa powder, baking powder, and salt, and mix again on low. Use a rubber spatula to scrape any dry ingredients stuck on the inside of the bowl into the batter.
½ cup flour, ½ cup unsweetened cocoa powder, ½ teaspoon baking powder, ¼ teaspoon salt
Fold the chocolate chips into your batter and fill each muffin cup about 3/4 of the way.
1 cup dark chocolate chips
Bake on the top rack for 15-17 minutes. Allow to cool completely before turning the brownie bites out of the muffin tin.
Option to add flaky sea salt on top. Enjoy!
¼ teaspoon flaky sea salt