Low Carb Loaded Gravy Volcano Mashed Potatoes
⏲ ~29 min total · prep 15 · cook 14 · 4 servings
Dinner⏱ 39 min total🔥 9.6g net carbs
By the KFI Test Kitchen · Tested & approved by Jason Lieu, KFI recipe editor
Published Sep 15, 2026 · Updated Sep 15, 2026
Ingredients
- 2 lb cauliflower florets, cut into 1 1/2-inch pieces
- 4 tbsp butter, divided
- 1/3 cup heavy cream, warmed
- 1 1/4 tsp kosher salt, divided
- 8 oz ground pork sausage
- 1 1/2 cups beef broth
- 1 tsp onion powder
- 1/4 tsp xanthan gum
- 4 slices bacon, cooked crisp and crumbled
- 1/2 cup shredded cheddar
- 1/4 cup sour cream
- 2 tbsp fresh chives, chopped
Instructions
- Steam the cauliflower in a large pot over an inch of boiling water, covered, 8-10 minutes, until a paring knife slides into a thick stem with no resistance.
- Drain thoroughly, return the florets to the hot pot off the heat, and let them sit uncovered 3 minutes to steam off surface moisture — this is what keeps the mash from going watery.
- Blend the cauliflower with 3 tablespoons of the butter, the warm cream, and 1 teaspoon of the salt using an immersion blender or food processor, pulsing, just until it flows like thick mashed potatoes — over-processing turns it gluey.
- For the gravy, brown the sausage in a 10-inch skillet over medium-high 5-6 minutes, breaking it small, until no pink remains; add the broth, onion powder, and remaining 1/4 teaspoon salt, scraping the browned bits loose, and simmer 3 minutes.
- Whisk the xanthan gum into the simmering gravy and cook 1 minute more, until it coats the back of a spoon.
- Mound the mash in the center of a warm platter into a 5-inch-wide, 3-inch-high volcano and carve a 2-inch crater into the top with the back of a spoon.
- Fill the crater with half the gravy so it spills down the sides, spoon the rest around the base, then blanket with the cheddar, bacon, remaining 1 tablespoon butter, sour cream, and chives. Serve immediately.
Why this recipe works
- Steam, then dry Three uncovered minutes in the hot pot after draining steams surface moisture off the florets. That step is the difference between mash and soup; wet cauliflower dilutes everything you add.
- Pulsed, not pureed Blending stops when the cauliflower flows like thick mashed potatoes. Past that point the cells break down and the texture turns gluey, as the recipe itself warns.
- Xanthan instead of flour A quarter teaspoon of xanthan gum thickens the sausage gravy in 1 minute with none of the carbs flour brings. Whisked into the simmering broth, it coats the back of a spoon.
Tips for making this recipe well
Drain, then dry harder
After steaming, the florets go back into the hot pot off the heat, lid off, for 3 minutes. Skip it and the mash weeps water onto the platter within minutes.
Warm cream goes in warm
Cold cream drops the mash temperature and makes blending uneven. Thirty seconds in the microwave is enough.
Break the sausage small
Small crumbles distribute through the gravy so every spoonful carries some. Large chunks stay greasy in the middle.
Whisk the xanthan hard
Dumped in, xanthan clumps into gel balls that never smooth out. Sprinkle it over the simmering gravy while whisking, then give it a full minute.
Carve the crater deep
Two inches down and 5 inches across leaves room for the first pour of gravy. Shallow craters overflow on the first ladle and the sides go slick.
Serving suggestions
This is the center-of-the-table production we save for holiday plates and Sunday dinners that need a show. Cauliflower does the mashing and sausage gravy floods a carved crater; the whole build lands at 9.6 net carbs a serving. Set the platter down hot and let everyone take from the sides while the lava runs. It plays the main course with a green vegetable alongside, or the over-the-top side next to roast chicken. Bring it out before people sit down; half the point is the reaction.
Storage and meal prep
Keep the mash and the gravy in separate covered containers in the fridge, 3 to 4 days each. The gravy freezes well for up to 2 months; the mash we would rather you not freeze, since cauliflower turns loose and weepy after thawing. Reheat the mash in a pot over low heat with a splash of cream, stirring often, then warm the gravy in a saucepan. Assemble the volcano only once everything is hot; a cold mound will not hold its crater.
Variations worth trying
- Bacon inside the lava Crumble half the bacon into the gravy as it simmers and reserve the rest for the top. More smoke below, crunch above.
- Sour cream finish Skip the cheddar and let sour cream and chives finish the top, with the last tablespoon of butter melted over. The cauliflower flavor stands up more this way.
- Beef instead of sausage Ground beef browned with the onion powder works the same way; cook until no pink remains, 165°F for ground meat. Expect a leaner gravy.
- Volcano for two Build a smaller mound in a pie dish with half the recipe. Same crater rule, shorter trip to the table.
Frequently asked questions
Can I use frozen cauliflower?
Yes. Steam it straight from frozen and extend the drying step to 4 or 5 minutes, since frozen florets carry extra water. The drier they go into the blender, the better the mash.
What if I have no xanthan gum?
Simmer the gravy 5 to 8 minutes longer to reduce it; it will be a touch thinner but still spoonable. Do not substitute flour or cornstarch on a keto plate.
Can I make it ahead?
Cook the mash and the gravy up to 2 days ahead and refrigerate them separately. Rewarm both, then build the volcano and add the toppings at the last minute.
Why is my mash gluey?
The blender ran past the thick-mashed-potato stage and broke the cauliflower down. Pulse in short bursts and stop as soon as it flows.
Anything milder than sausage?
Ground pork or beef both work; season with the onion powder and salt as written. Ground meat is done at 165°F with no pink left.
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