Preheat your oven to 350°F (175°C). Grease a 9x13 inch baking pan or line it with parchment paper for easy removal.
In a large mixing bowl, combine the melted butter and granulated sugar. Whisk until well blended. Add the eggs one at a time, mixing thoroughly after each addition. Stir in the vanilla extract.
In a separate bowl, sift together the flour, cocoa powder, salt, and baking powder. Gradually add the dry mixture to the wet ingredients, stirring until just combined. Do not overmix.
Gently fold in the sliced strawberries until they are evenly distributed within the brownie batter.
Pour the brownie batter into the prepared pan and spread it out evenly. Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted in the center comes out mostly clean (a few moist crumbs are fine).
While the brownies are cooling, melt the chocolate chips and vegetable oil together in a microwave-safe bowl. Heat in 30-second intervals, stirring in between, until fully melted and smooth.
Once the brownies have cooled slightly (about 10 minutes), pour the melted chocolate over the top and spread it evenly with a spatula.
Place the brownies in the refrigerator for at least 30 minutes to set the chocolate.
Once the chocolate has hardened, cut the brownies into squares and serve. For an extra touch, garnish with additional fresh strawberries on top!
Notes
Serve the brownies on a decorative platter, dusted with powdered sugar for added elegance. Garnish with whole strawberries or sprigs of mint for color. Enjoy!