Start by making the whipped strawberry cream cheese filling. Combine all ingredients in the bowl of a stand mixer with the paddle attachment and whip on medium-high until stiff peaks form. About 3 minutes.
In a shallow bowl, whisk the eggs, heavy cream, vanilla, cinnamon and salt.
Using a pairing knife, slice each piece of challah down the center 3/4 of the way to the bottom to create pockets in each piece for the filling. Stuff about 1-2 tablespoons of whipped strawberry cream cheese filling in the center of the bread pieces. The more filling the more messy they will be but that is perfectly fine!
When ready to cook the french toasts, heat a medium skillet over medium heat. Butter the pan so it is generously coated in butter. Dip each stuffed french toast in the egg mixture and flip it around to coat all sides. Place in the pan and cook 3-4 minutes on each side until golden brown. Repeat with the rest of the bread avoiding overcrowding the pan.
When cooked, top the french toast with more strawberry cream cheese filling, syrup, extra strawberry jam, Nutella or any amazing topping you have lying around.