Cover with a lid and simmer 25-35 minutes, until the pasta and rice are cooked through and tender.
Serve and enjoy! Add extra butter in at the end, if you like.
Notes
Use gluten-free spaghetti noodles, not vermicelli noodles, for best results. Gluten-free spaghetti is much sturdier than gluten-free vermicelli noodles.
Cook the rice in chicken stock for the best flavor. You could also use vegetable stock, if preferred.
Use a low sodium chicken stock to avoid your rice-a-roni becoming too salty. Taste test if you aren't sure.
Make-ahead instructions:
Measure out and break the pasta into bite-size pieces.
Measure out the rice. Add it and the broken pasta pieces to a ziplock bag or airtight container.
Measure out the seasoning used in the recipe and place it in a ziplock bag or airtight container.
Store both until ready to use - all you will need to do is add chicken stock and butter!