Combine blueberries, water, vanilla, and sugar in a saucepan over medium-high heat.
Cook until the berries pop and the mixture begins to boil.
Reduce heat and simmer for 5 minutes, then cool.
Mix cream cheese and 1/4 cup creamer, then blend in 1/4 cup blueberry sauce.
Cut a pocket into each bread slice and fill with the cream cheese mixture.
Preheat a skillet over medium-low heat.
Beat eggs and 1 cup creamer in a shallow bowl.
Dip both sides of each stuffed toast in the egg mixture and let excess drip off.
Cook each side until golden brown and serve with blueberry sauce and whipped cream.