Prepare the Pan:

Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper, leaving an overhang on the sides so you can easily lift the brownies out later.

Make the Batter:

In a medium mixing bowl, whisk together the melted butter and granulated sugar until well combined. Add the eggs one at a time, whisking vigorously after each addition until the mixture looks glossy. Stir in the vanilla extract.

Add the Dry Ingredients:

Fold in the all-purpose flour, cocoa powder, and salt. Use a spatula to mix just until the dry ingredients disappear. Do not overmix! If using optional chocolate chips or nuts, fold them in now.

Bake:

Pour the thick batter into your prepared pan and smooth the top evenly. Bake for 22–25 minutes. A toothpick inserted into the center should come out with moist crumbs, not wet batter.

Cool and Chill:

Allow the brownies to cool completely in the pan at room temperature. For the cleanest cuts, transfer the pan to the refrigerator for 30 minutes to chill before slicing.

Slice into Bars:

Using the parchment paper overhang, lift the cold brownies out of the pan and onto a cutting board. Using a sharp knife wiped clean between cuts, slice into 16 even squares (or larger bars if you prefer).

Prepare the Coating:

In a microwave-safe bowl, combine the chocolate and coconut oil. Microwave in 30-second increments, stirring well after each burst, until the chocolate is completely melted and smooth. Alternatively, use a double boiler over simmering water.

Dip the Brownies:

Using a fork, dip each chilled brownie square into the melted chocolate, ensuring it is fully coated. Lift it out, tap the fork gently against the side of the bowl to remove excess chocolate, and slide the brownie onto a parchment-lined baking sheet.

Set and Serve:

Place the baking sheet in the refrigerator for 10–15 minutes, or until the chocolate shell has completely hardened. Serve chilled or at room temperature, and try not to eat three at once!