Make rice on side. For a normal amount (4 people), 1/4-1/3 head of cauliflower is good amount. Double recipe: full head of cauliflower, 2 quarts of canned tomatoes, full bag of peas, full can of coconut cream.
I used ground beef for a cottage pie. I added about a cup of heavy cream to the cauliflower mixture when whipping it because it was too dry. I initially tried using a hand mixer which was not strong enough and then switched to my blender which was way too aggressive. The food processor is probably the way to go, unfortunately mine died recently. As far as taste, it was terrific! I didn't miss the peas at all and the mashed cauliflower was amazing.
Added an ounce of broccoli purée and a little less than a quarter cup of flour to compensate. Husband said they’re better than the last time I made them!