Creating these amazing Strawberry Cheesecake Brownies is simple when you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease an 8-inch square baking pan or line it with parchment paper.

1. Make Brownie Batter: In a medium saucepan, melt the butter over low heat. Once melted, remove from heat and stir in the sugar. Allow the mixture to cool slightly before adding the eggs and vanilla extract, mixing until well combined.

1. Combine Dry Ingredients for Brownies: In a separate bowl, sift together the cocoa powder, flour, salt, and baking powder. Gradually stir the dry ingredients into the wet mixture until just combined. Be careful not to overmix.

1. Prepare the Cheesecake Mixture: In a mixing bowl, beat the softened cream cheese with granulated sugar until smooth. Add the egg and vanilla extract, mixing until well combined. Gently fold in the sliced strawberries.

1. Layer the Brownie Batter: Pour half of the brownie batter into the prepared baking pan, spreading it evenly.

1. Add Cheesecake Layer: Spoon the cheesecake mixture over the brownie layer, carefully spreading it out.

1. Top with Remaining Brownie Batter: Pour the remaining brownie batter over the cheesecake layer. Use a knife or spatula to swirl the two layers together gently, creating a marbled effect.

1. Bake: Bake in the preheated oven for 30-35 minutes. A toothpick inserted in the center should come out with a few moist crumbs but not wet batter.

1. Cool: Remove from the oven and allow the brownies to cool in the pan for at least 20-30 minutes before slicing into squares.

1. Serve and Enjoy: Once cooled, slice the brownies and enjoy them as they are or with a dollop of whipped cream on top.