In a large bowl, cream together softened butter, sugar, and brown sugar until fluffy.
Add eggs 1 at a time.
Then add vanilla, milk and applesauce. Whisk together until combined.
In a separate bowl, combine flour, cinnamon, baking powder, and salt; mix together.
Fold flour mixture into wet ingredients; combine taking care not to over mix.
Fold berries and lemon zest into batter gently to avoid over crushing fruit.
Pour cake/berry batter into greased 12 inch Dutch oven or 9x13" pan
For Dutch oven, place 7 coals on bottom and 18 coals on top. Bake for ~ 40-45 minutes, but start checking at ~ 20-25 minutes.
Remove and sprinkle with powdered sugar if desired.