Preheat an oven to 350°F.
Combine softened butter with the sugar and coconut oil using a hand mixer. If you haven't had time to let your butter soften, put it in the microwave for 20 second-intervals until you can poke it with your finger and leave an imprint.
½ cup unsalted butter, softened, 1 ¼ cup cups granulated sugar, 1 tablespoon coconut oil
Add the eggs and vanilla and whisk until combined.
2 eggs, 2 teaspoons vanilla extract
Sift in flour, cocoa powder, espresso powder (optional), and salt and combine until smooth.
½ cup all-purpose flour, ½ cup unsweetened cocoa powder, ¼ teaspoon salt, 2 teaspoons espresso powder
Pour batter into lined 9 x 9 inch square baking pan.
Cover top with an even layer of chocolate chips.
1 cup chocolate chips
Bake for 25-30 minutes, remove from oven and immediately crack on sea salt or pink Himalayan salt. Allow to cool and enjoy!
1 pinch sea salt or pink Himalayan salt