Preheat oven to 350, lightly spray or grease a 9 x 13” baking dish
Beat together the yogurt, sugar, vanilla, cinnamon until blended well
Add eggs one at a time, then the milk. Mix well
Slice the baguette on a deep angle, about ½” thick per slice. Arrange slices of bread in the dish and top with the berries, pour over the mixture and let stand 15 minutes (you can also prep this the night before, cover and keep in fridge, then bake in the morning). Bake for 45-60 minutes, until the top is dark brown and crispy
Let rest 10 minutes to cool slightly. Serve with maple syrup and sifted powdered sugar over the top, add more berries and maybe some mint leaves if you want to get fancy.