Start by slicing your brioche bread into thick pieces, about an inch thick to ensure they soak up the custard without getting too soggy.

In a mixing bowl, whisk together the large eggs, whole milk, vanilla extract, ground cinnamon, and a pinch of salt until everything is well combined and creamy.

Spread a generous layer of mascarpone cheese on one side of each brioche slice, then layer fresh raspberries on top before placing another slice of brioche on each to create delicious sandwiches.

Gently dip each assembled sandwich into the custard mixture for about 30 seconds on each side. Ensure they are well-coated, but not overly soaked, to maintain a fluffy texture.

Heat a non-stick skillet over medium heat and add a pat of butter. Cook the sandwiches for about 3 minutes on each side or until they are golden brown and slightly crispy.

Dust each serving generously with powdered sugar, and garnish with extra fresh raspberries. Drizzle with maple syrup if desired for an extra indulgent touch!