Low Carb Tuna and ' Rice' Casserole

Total Time
Prep 15 mins
Cook 35 mins

This "rice" used in this recipe can be used as a substitute for rice in any recipe.

Ingredients Nutrition


  1. Put cauliflower in a 2 1/2 quart casserole with a lid.
  2. Add 3 tablespoons of water, cover and microwave on HIGH 8-10 minutes until just tender, stirring every couple minutes (do not overcook); stir in 1 tablespoon butter.
  3. Meanwhile, sauté the celery in remaining tablespoon of butter until very tender.
  4. In medium microwaveable bowl, mix 6 ounces of the cheese and cream.
  5. Microwave a 2 minutes to melt the cheese; stir until well blended.
  6. Whisk in mayonnaise, seasonings and dry onion.
  7. Stir tuna and mushrooms into cauliflower; add cheese sauce and mix well.
  8. Can be covered and chilled at this point and then baked later.
  9. Cover and bake at 350ºF for 20 minutes; uncover, top with remaining cheese and bake another 10-15 minutes until bubbly; add an extra 5-10 minutes to first baking time if chilled.
Most Helpful

I added green onions to this recipe instead of onion powder. Turned out great. Husband loved it.

Posiespocketbook April 02, 2013

Awesome recipe! The other eater really thought this contained rice. I made a couple of slight changes -- I used real onion instead of onion flakes (even though it adds some carbs), and I used fresh mushrooms. I just sauteed them both with the celery. I'm going to be making this all the time -- thanks for sharing!

Aunt Cookie August 26, 2007

I used fresh mushrooms and onions, sauteed with the celery. I don't know how anyone can mistake this for rice. It certainly tasted like cauliflower, flavor and texture. I also felt it was a little bland. It didn't make me want to eat the leftovers.

LousyChef June 12, 2015