Three not-quite-classic mac-and-cheese options:

Annie’s Gluten-Free Rice Pasta & Cheddar

Though it tastes more buttery than cheesy, this is a good alternative for those with a wheat allergy. (Note: Rice pasta can be tricky to cook, going from al dente to glue in a few seconds.)
To Buy: $3 for a 6-ounce box, www.annies.com.

Hodgson Mill Whole Wheat

This brand has a firm texture, a nutty flavor, and a definite whole-grain look. Its cheesy sauce rivals those of the Best Boxed Mac-and-Cheese winners.
To Buy: $1.60 for a 7.25-ounce box, www.hodgsonmill.com for store locations.

Kraft Supermac & Cheese

Although they look and taste like regular noodles, these are fortified with whole-wheat flour, making them somewhat higher in fiber and nutrients.
To Buy: $1 for a 6-ounce box, at supermarkets.