Preheat the oven to 180 °C (350 °F), conventional oven (top and bottom heat).
Either butter a standard muffin pan and dust it with flour or line the cups with paper liners.
In a large mixing bowl, gently combine the 250 g all-purpose flour, 200 g brown sugar, 30 g cocoa powder, 0.5 tsp baking powder and 0.5 tsp baking soda with a spoon.
Then add 125 g water, 125 g milk, 80 g canola oil, 1 tsp white wine vinegar, 1 egg and the seeds of 0.5 vanilla bean.
Quickly mix with a stand mixer or a whisk until all the ingredients are combined.
In a second bowl, combine 250 g full-fat cream cheese, 60 g sugar, 1 egg yolk and the seeds of 0.5 vanilla bean and beat until creamy, either with the stand mixer or the whisk.
Using two tablespoons, divide the chocolate batter among the 12 muffin cups (approx. 2.5 tbsp each).
Using two teaspoons, place the cheesecake cream in the center of the chocolate batter and gently press it in a little.
Bake the muffins in the oven for 25 - 30 min and then let them cool completely.