This is my absolute favorite healthy substitute! I've tried spaghetti squash spaghetti and it's ok, but my husband throws a huge fit anytime I try and feed it to him. Cauliflower rice, aka Caulirice, is just like rice but lighter and fluffier. I serve it with teriyaki chicken and it is SO good all mixed together and so healthy!
Grate a head of cauliflower or put it through a food processor. Put it all in a large skillet with a tablespoon or so of butter. Add salt to taste and cook until soft, just a few minutes. Serve with anything that goes with rice!