Begin by preheating your oven to 350°F (175°C). Prepare a 9x13 inch baking pan by greasing it lightly and lining it with parchment paper, allowing some paper to overhang to facilitate easy removal later.
In a large mixing bowl, whisk together the melted butter and granulated sugar until you achieve a smooth, glossy mixture.
Add the eggs, one at a time, whisking thoroughly after each addition until fully incorporated. Finally, mix in the vanilla extract.
In a separate bowl, sift together the all-purpose flour, cocoa powder, baking powder, and salt. Gradually fold the dry ingredients into the wet mixture using a spatula until just combined; avoid overmixing to ensure a fudgy texture.
Carefully fold in the sliced strawberries, making sure they are evenly distributed throughout the brownie batter without breaking them apart too much.
Pour the brownie batter into the prepared baking pan, using a spatula to smooth the top for an even surface.
Bake in the preheated oven for 25-30 minutes. Check for doneness by inserting a toothpick into the center; it should come out with a few moist crumbs attached, indicating the brownies are fudgy.
Allow the brownies to cool in the pan for about 15 minutes. Using the parchment paper, lift them out and transfer to a wire rack to cool completely.
While the brownies are cooling, prepare the chocolate coating. In a heatproof bowl, combine the chopped dark chocolate and coconut oil. Melt the mixture in the microwave in 30-second intervals, stirring between each interval until completely smooth and combined.
Once the brownies are fully cooled, cut them into even squares. Dip each brownie square halfway into the melted chocolate, allowing any excess to drip back into the bowl.
Place the dipped brownies on a tray lined with parchment paper. To finish, adorn each chocolate-covered brownie with a slice of fresh strawberry on top, adding a pop of color and flavor.
Let the chocolate set either at room temperature or in the refrigerator for about 30 minutes, allowing the coating to firm up.
Notes
Arrange the brownies on a decorative platter and drizzle any leftover melted chocolate over the top for an elegant touch.