Crack eggs, and whisk them together with whole milk, vanilla extract.
Evenly coat all eight pieces of bread with mixture. All egg/milk mixture should be absorbed when finished.
Using nonstick griddle, cook each piece of toast approximately 2 minutes on each side or until golden brown. Butter can be used if desired to griddle toast (or omitted).
Keep French toast warm in oven until all pieces are cooked and ready to be served.
Combine mascarpone, sugar, and heavy cream until well mixed. Should be the consistency of melted ice cream. Adjust with a few tablespoons of heavy cream if needed.
Cut French toast pieces in half diagonally, and shingle on large serving platter.
Sprinkle strawberries and blueberries across the platter of French toast.
Drizzle mascarpone cream over the platter and top with orange zest.
Serve immediately.
