Summer Berry Pudding

Name: Summer Berry Pudding
Ingredients: 2 pints strawberries, hulled, quartered; 2 pints blueberries; 2 pints raspberries; 1 cup plus 2 Tbsp. sugar; 1 vanilla bean, split lengthwise; 1 1-lb. loaf brioche or challah bread, cut crosswise into 1' slices; 6 tablespoons unsalted butter, room temperature; 1/2 teaspoon ground cinnamon