When I first shared this recipe in a post about capers, in January 2008, I thought that, because I found it in a kids' cookbook, it would be typical kid food. Au contraire. Capers give the vegetable sauce a sophisticated profile, but honestly, I imagine my grandkids would take great pains to pick out each and every caper berry. Two changes I've made in the way I prepare this recipe now: I use smaller amounts of both capers and lemon juice, which tend to overwhelm the delicate vegetables, and I add a teaspoon of garlic. I like to serve the vegetable topping right in the spaghetti squash, so each person can scrape out his or her own squash as they go along. Sometimes, I grate some parmesan or asiago cheese on top. Not vegan, but delicious.