Cut a wide pocket into each slice of bread without cutting all the way through the bread.
In the bowl of a stand mixer fitted with the paddle attachment, beat together the cream cheese, vanilla extract, lemon juice, lemon zest and 1/2 cup diced strawberries until well combined, about 2 minutes.
Slather a portion of the cream cheese mixture inside each bread pocket and press each bread pocket closed.
In a medium bowl, whisk together the eggs, heavy cream, cinnamon and sugar.
Place a large pan over medium heat and add 2 tablespoons of butter. Once the butter has melted, dip each stuffed slice of toast into the egg mixture on all sides and shake off any excess. Place the bread immediately into the pan and cook until golden, about 2 minutes. Flip once and continue cooking until golden, about 2 minutes. Repeat the coating the cooking process with the remaining slices of bread. (Do not overcrowd the pan.)
Serve the French toast immediately topped with maple syrup and the remaining diced strawberries.