They take about fifteen to twenty minutes prep time and even shorter if you use ready made pasta sauce.
Heres the deal.
In a small saucepan heat 1 can of diced tomato's (Annalisa is always a winner) half a diced onion, some garlic and some salt and pepper to your taste. Once simmering turn of heat and let sit.
Mix one and a half cups of low fat ricotta and a handful of roughly chopped wilted spinach until its all combined.