In a small pot, stir together grape juice and cornstarch dissolved in water. Set to medium heat and cook, stirring almost constantly, until bubbling. Cook about 3 minutes more until slightly thickened, making sure it doesn’t bubble over. Turn off heat and let sit. It will thicken a little more as it cools.
In a large bowl, whisk together eggs, coconut milk, sugar, cinnamon, vanilla and nutmeg.
Pull a little bit of bread out of the center of each slice of bread, making a little well, being careful not to make a hole. Scoop about ¼ cup ricotta cheese in the well of four of the slices. Top with the other slice of bread.
Heat the butter in a large skillet on medium heat. Swirl to coat the pan.
Dip the “sandwiches” into the egg mixture on each side, pressing down slightly so it soaks up the liquid. Add to the hot pan and cook about 4-5 minutes until golden brown. Flip and cook 4-5 minutes on the other side
Serve warm, drizzled with syrup.