Preheat your oven to 320°F (160°C) and butter two baking dishes generously.
In a large mixing bowl, mix together the dry ingredients (milk powder, cocoa powder, baking powder, and a pinch of salt).
In a separate bowl, whisk together the wet ingredients (eggs, Greek yogurt, and 1 shot of espresso).
Fold the wet ingredients into the dry ingredients until just combined into a smooth batter.
Divide the batter evenly between the two buttered baking dishes.
Bake at 320°F for 50 minutes until set.
While the cakes bake and cool, mix the frosting ingredients (mascarpone, cream cheese, raw honey, 1 shot espresso, and 1/4 cup cocoa powder) together until smooth.
Once the cakes are completely cool, spread the frosting between the layers and over the top.