This was actually my mom's recipe, but to this day, I haven't had lasagna that has been able to match this one. We very rarely had leftovers when she made this. But, if you do get leftovers, it's even better the next day after reheating. This particular recipe calls for cottage cheese, but you can certainly use the same amount of ricotta cheese if you like. But, I will tell you, once you taste it, you won't even tell it's cottage cheese that you're eating. My mom just always used it because it's healthier, at least that what she says, but I like it better anyway because it doesn't have that "dry" texture ricotta has. But it's up to you. Also, if you have a little extra mozzarella cheese, you can add some of that to the top after you remove the foil and before putting it back in the oven, if you wish. I hope you enjoy it!!