Heat oven to 350°F and grease a 9x13-inch dish.
Toss the apples with the brown sugar, flour, cinnamon and lemon juice.
Beat the cream cheese, ricotta, sugar, egg and vanilla until smooth.
Layer 3 noodles, half the apples, 3 noodles, all of the creamy filling, 3 noodles and the remaining apples.
Mix the crumble flour, oats and brown sugar; cut in the butter until crumbly and sprinkle on top.
Cover with foil and bake 30 minutes. Uncover and bake 15 to 20 minutes more until the apples are tender and the top is golden.
Rest 15 minutes before cutting.