Baked berry French toast

We recently made this unbelievably delicious baked French toast with mascarpone and blackberries. Matt's parents had brought the local mascarpone and black raspberries from Wisconsin, and we also happened to have some milk that needed to be used up, so this was a frugal dish for us as well as being absolutely heavenly. We even had some rum in the back of the cupboard that I'd forgotten about until now. Here's the recipe, and here is how we did it:

French Toast with Mascarpone and Black Raspberries

* 1 cup of fresh black raspberries
* 1/2 cup mascarpone cheese
* 1 egg yolk
* 1 large or 2 medium eggs
* 1 cup milk
* 1/8 cup melted butter
* 1 1/2 cup whole milk
* 1/2 cup of brown sugar
* pinch of cinnamon
* 2 tsp vanilla
* 1/4 cup rum
* salt
* 1 loaf bakery bread, sliced

Directions:
1. Preheat oven to 325°F.
2. Combine eggs and yolk with milk, butter, milk, brown sugar, cinnamon, vanilla and rum. Add a pinch of salt for taste.
3. Take bread and soak in egg/milk mixture.
4. Place bread in a buttered 9 inch baking pan. Squish each piece in until pan is full.
5. Top with a layer each of fruit and cheese. Repeat with remaining bread, x 2-3 layers. Pour remaining egg mixture over the pan.
6. Bake for 45 minutes or until golden brown. Top with more berries, and/or maple syrup.