We love Italian food in our home, and a frequent quick meal our kids yell for is a quick dinner of pasta with a sausage sauce.  I decided to try and take it to another place tonight by using quinoa to make it gluten-free and Paleo friendly.  Roasting the tomatoes take a lot of extra time, but cooking the quinoa will take most of the 50 minutes or so you will need to roast off the tomatoes, and trust me, there is no way to substitute the depth of flavors you will get unless it is summer time and you can throw whole tomatoes on the grill to slow roast them there.  The spinach will add some great contrasting flavor in addition to the contrasting color it brings, and you can add more than I did if you want more greens, but my kids were rebelling even with this.