This was pretty good. I am giving it four stars because I had to play around with this alot since there weren't too many precise measurements. First off, for the alfredo sauce, I used a package of Knorr alfredo mix and prepared it as instructed. While the alfredo sauce was cooking, I took three quarters of a 500 mL can of diced tomatoes and mix it with 2 tbsp of parmesan cheese, Â¼ tsp of salt and Â¼ tsp of pepper. Once the alfredo was ready, I poured it into the tomato mixture and added Â¾ cup of yellow cheddar (I didnâ€™t think Â½ cup was enough) and mixed it all together with cheese tortellini. I then put it in the oven at 350F for 15 minutes. I have been looking for this type of sauce for a while! I will make this again using the measurements I just mentioned above. Thank you for posting this recipe.