In a large bowl, add eggs, milk,half and half, granulated sugar, brown sugar, vanilla, and cinnamon. Whisk together until well combined. Slowly pour the egg mixture over all of the bread. Cover the pan with plastic wrap and store in the refrigerator so the egg mixture can finish soaking all of the bread; at least 4 hours and up to 24 hours.
10 large eggs, 2 cups whole milk, ½ cup half and half or whipping cream, ½ cup granulated sugar, ½ cup brown sugar, 2 Tbsp vanilla extract, 1 tsp ground cinnamon