Start by preheating your oven to the appropriate temperature and preparing your baking dish.

In a mixing bowl, combine almond flour, cocoa powder, and erythritol or your chosen keto sweetener. Stir them together until you have a uniform mixture.

Add the melted butter to the dry ingredients and mix well until the mixture resembles a thick paste.

Incorporate the eggs, one at a time, blending well after each addition.

Add in the vanilla extract and mix until it’s fully combined.

Pour the brownie batter into your prepared baking dish, spreading it out evenly.

In a separate bowl, blend the softened cream cheese and sour cream with the remaining erythritol or keto sweetener until smooth.

Mix in the teaspoon of vanilla extract and a pinch of salt to the cream cheese mixture.

Dollop the cheesecake mixture on top of the brownie batter and gently swirl it into the brownie base using a knife or a spatula.

Place the baking dish in the oven and bake for the recommended time.

Once baked, remove the brownies from the oven and let them cool in the dish.

Finally, slice the brownies into squares, and they are ready to serve.