Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan, or line it with parchment paper.

In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy, about 3-4 minutes.

Beat in the eggs, one at a time, followed by the vanilla extract until well incorporated.

In another bowl, whisk together the flour, baking powder, salt, and cocoa powder.

Slowly mix the dry ingredients into the wet mixture until just combined. Don’t overmix!

Pour about two-thirds of the cookie dough into your prepared baking pan and spread it evenly.

Drop spoonfuls of strawberry jam over the dough and carefully spread it without disturbing the bottom layer.

Flatten the remaining cookie dough between your hands and gently place it over the jam layer.

Bake in the preheated oven for 20-25 minutes or until the edges start to turn golden brown.

Remove from the oven and let cool completely in the pan.

Once cooled, spread the vanilla frosting evenly over the top.

Sprinkle with optional sprinkles for extra flair.

Cut into squares, serve, and enjoy!