Here's a great alternative to mashed potatoes for Thanksgiving or any day.
12 ounces celery root
1 head of cauliflower
3 tbsp butter
1 ½ oz cheese
¼ tsp sea salt
1/8 tsp ground black pepper
Peel the celery root and cut into cubes.
Steam the celery root for approximately 10 minutes
Chop the cauliflower into florets.
Add to celery root and steam for an additional 10 minutes.
When both are soft, drain and place in food processor.
Add the butter, cheese salt, pepper and puree.
Adapted from 200 Low Carb High Fat Recipes