Beat the cream cheese, powdered sugar and vanilla with a hand mixer on medium until smooth, 3-5 minutes. Refrigerate while you make the apple filling.
Melt the butter in a large pan over medium heat. Add the diced apples and cook about 5 minutes. Add the brown sugar, flour, cinnamon and water and cook until the apples are soft and a sauce forms. Transfer to a bowl to cool.
Combine the cinnamon and sugar in a small bowl; set aside.
Place about 1 tsp cream cheese filling and 1 tsp apple filling in the center of a wonton wrapper. Wet all 4 sides with water and fold diagonally, then bring in the remaining 2 sides, sealing with no holes. Repeat with all wrappers.
Heat the oil to 350°F (180°C). Fry the wontons in small batches until golden, about 4 minutes. Drain on paper towels. Toss in the cinnamon sugar.
