Tinkyada is a brand of brown rice pasta that I frequently use due to a gluten intolerance. I've found when making baked pasta dishes (mac and cheese, baked ziti, etc.) that it's best to boil the Tinkyada pasta for no more than 3 minutes and then thoroughly rinse it in cold water. If it is not chilled before adding the sauce and put it in the oven it tends to turn to mush. I think it also helps if each of the componets is thorougly cooked and warm(sans pasta) when the dish is put together. I would also suggest that you not use a timer to determine doneness, but rather look and taste. Brown rice pasta goes from al dente to mush in about 3 seconds flat.
There are some brands of gluten free pasta that are extemely close in taste and texture to semolina pastas. Of all my pasta choices, brown rice is my least favorite. It's quite heavy and can be a bit gummy. I'll share a couple brands that I like, if you're intersted.
veloute