French Toast Roll Ups

Name: French Toast Roll-Ups
Ingredients: 1/2 cup packed brown sugar; 1 teaspoon ground cinnamon; 1/4 cup heavy cream; 1/4 cup maple syrup, plus more for serving; 1/2 teaspoon vanilla; 4 large eggs; 8 slices white sandwich bread, crusts removed; 8 tablespoons salted butter, 4 tablespoons melted plus 4 tablespoons for frying; 1/2 cup blueberry pie filling; Confectioners' sugar, for dusting