Preheat the oven to 350°F and line a 9×9 pan with parchment.

Mix the melted butter and sugar in a mixing bowl. Add the eggs and vanilla extract, then mix until combined.

In another bowl, whisk together the flour, cocoa powder, salt, and baking powder. Combine the dry ingredients with the wet ingredients.

Spread the brownie mixture into the prepared pan and bake for 12 minutes.

While the crust is baking, beat the cream cheese in a mixing bowl until smooth. Add sugar, eggs, vanilla, and sour cream. Mix until well incorporated.

Fold in the diced strawberries gently into the cheesecake filling.

Reserve 1/3 cup of cheesecake batter. Pour the remaining filling over the baked brownie crust.

Mix the reserved batter with the strawberry puree. Dollop and swirl it gently on top of the cheesecake filling.

Bake for an additional 30–35 minutes. Once baked, cool completely, then chill for at least 4 hours.

Before serving, drizzle with melted chocolate and top with fresh strawberry halves. Slice into bars.