It was fairly simple, not too many unique ingredients, things you mostly have around the house. I used homemade pie crust and I think it's much better, not as quick, but better flavor. Also, 3 medium apples lends quite a bit on apples. I couldn't fit them all in the tart even after making 2 layers, had about 3/4 c left. I'd peel & start with two and then if you need another, do that. The crumb topping was a nice touch although I think that brown sugar might have been better, will try that next time to give a richer/sweeter flavor to the topping. I used Light cream cheese & light sour cream and I think it was still just delightful. Not too sweet overall and that is refreshing. Great breakfast tart with coffee.