Pesto Chicken Cauliflower Rice (15-Minute Low-Carb Dinner)

A cheesy, herb-flecked skillet that turns leftover chicken into a fast, satisfying, low-carb dinner.

Some nights you want dinner to be done before you've even decided what to watch. This is that dinner. It takes one pan, a handful of pantry staples, and whatever cooked chicken is hiding in your fridge, and it lands on the table in about the time it takes to set it. The cauliflower soaks up garlic, tomato, and that deep, savory hit of red pesto until it stops tasting like a diet swap and starts tasting like something you'd actually order.

What I love most is how forgiving it is. There's no precise rice-to-water ratio to babysit, no risk of a gummy pot of grains, and no long simmer. You build flavor in layers, melt cheese through the middle, and finish with a big handful of fresh greens and dill so the whole thing tastes alive rather than heavy. It's low-carb, gluten-free, and high in protein, but mostly it's just genuinely good, which is the only reason a "healthy" recipe ever earns a spot in the regular rotation.

Why you'll love this recipe

It's ready in about 15 minutes. Prep is mostly chopping, and the cooking happens in a few quick covered bursts.
One pan, minimal cleanup. Everything builds in a single skillet, so there's no colander, no separate rice pot, no mess.
A smart way to use leftovers. Rotisserie chicken, last night's grilled breasts, or any cooked chicken you've got works beautifully here.
Low-carb and high-protein. Around 19g of carbs and 35g of protein per serving, so it keeps you full without the post-pasta slump.
Packed with vegetables. Cauliflower, tomato, arugula, and fresh dill mean you're getting real produce in a dish that still feels indulgent.
Endlessly flexible. Swap the cheese, the greens, the pesto, or the protein, and it still works.

Ingredients

Shredded chicken (1 cup) — Cooked chicken is the shortcut here. Use rotisserie, poached, or grilled. Swap: shredded turkey, or skip it entirely for a vegetarian version.
Cauliflower rice (2 1/2 cups) — The base of the dish. Make your own from about half a head, or grab a bag of pre-riced. Swap: broccoli rice, or a half-and-half mix of cauliflower and broccoli.
Tomato (1, chopped) — Sauteed first to build a jammy, savory foundation. Swap: a handful of halved cherry tomatoes, or a few tablespoons of canned diced tomato, drained.
Garlic (2 cloves, minced) — Added in two stages so you get both mellow depth and a fresh finishing punch. Swap: 1/2 tsp garlic powder in a pinch.
Shredded mozzarella (2/3 cup) — Melts through the rice and pulls everything together. Swap: provolone, white cheddar, or a dairy-free shredded cheese.
Arugula (1 cup) — Stirred in at the end so it wilts just slightly and adds a peppery bite. Swap: baby spinach or chopped kale.
Fresh dill (3 tbsp, thinly chopped) — Brightens the whole skillet. Swap: fresh basil or parsley.
Olive oil (1 tbsp) — For sauteing. Swap: avocado oil.
Milk (1/2 cup) — Loosens everything into a creamy, risotto-like texture. Swap: any unsweetened plant milk.
Tomato paste (1 tbsp) — A small amount adds big savory depth. Swap: an extra spoon of red pesto.
Red pesto (2 tbsp) — The flavor engine of the dish. Swap: green basil pesto for a fresher, brighter profile.
Salt and black pepper — To taste, layered as you go.
Parmesan (optional) — For finishing. Swap: a little extra mozzarella or nutritional yeast.

How to make pesto chicken cauliflower rice

Prep your cauliflower rice. If you're starting from a whole head, pulse florets in a food processor 2 to 3 times until they look like coarse grains, stopping before they turn to mush. About half a head yields roughly 2 1/2 cups. Store-bought riced cauliflower works just as well.
Build the base. Warm the olive oil in a skillet over medium-high heat and saute the chopped tomato for 1 to 2 minutes until it softens. Stir in the cauliflower rice and one minced garlic clove, then add the shredded chicken, tomato paste, red pesto, and a pinch of salt. Cover and cook for 2 to 3 minutes.
Make it creamy. Pour in the milk and add half of the shredded mozzarella. Cover again and let it melt and bubble for 2 to 3 minutes.
Finish with greens. Stir in the remaining cheese and the second garlic clove. Add the dill and arugula and cook for about 2 more minutes, just until the greens wilt and the cheese is fully melted.
Serve right away. Spoon it into bowls and finish with grated parmesan and a few cracks of black pepper if you like.

How to serve it

On its own as a quick, complete one-bowl dinner.
With a fried or poached egg on top for an extra-hearty, protein-rich plate.
Alongside a simple green salad dressed in lemon and olive oil to keep things light.
Tucked into a low-carb wrap or lettuce cups for lunch the next day.
With a spoon of extra pesto swirled on top for anyone who wants a bigger flavor hit.

Variations and swaps

Make it vegetarian: Leave out the chicken and add a drained can of white beans or some sauteed mushrooms for substance.
Make it dairy-free: Use your favorite plant milk and a dairy-free shredded cheese; the texture stays creamy.
Go green: Swap red pesto for classic basil pesto and use spinach instead of arugula for a fresher, lighter version.
Add heat: Stir in a pinch of red pepper flakes or a spoonful of harissa with the tomato paste.
Bulk it up: Fold in extra vegetables like zucchini, bell pepper, or mushrooms when you saute the tomato.
Make it richer: Stir a spoonful of cream cheese or mascarpone in with the milk for a more decadent, risotto-style finish.

Storage and meal prep

This dish is best fresh, when the cheese is still melty, and the greens are just-wilted, but it keeps well too. Cool any leftovers and store them in an airtight container in the fridge for up to 3 days. Reheat gently in a skillet over medium heat with a small splash of milk or water to loosen it back up, or microwave in short bursts, stirring between each.

For meal prep, you can rice the cauliflower and chop the tomato, garlic, dill, and chicken ahead of time so the actual cooking takes just a few minutes. I don't recommend freezing the finished dish; cauliflower rice tends to go watery and soft after thawing, and the fresh greens lose their texture.

Frequently asked questions

Can I use frozen cauliflower rice? Yes. There's no need to thaw it first; just add it straight to the pan. It may release a little extra moisture, so cook it uncovered for an extra minute or two if the skillet looks watery.

What kind of cooked chicken works best? Anything already cooked. Rotisserie chicken is the easiest, but poached, baked, or grilled chicken breast or thigh all work. The dish is a great way to use up leftovers from an earlier meal.

Is this recipe keto-friendly? It's naturally low-carb and works for most keto plans, though exact numbers depend on your brand of pesto, cheese, and milk. Using a low-sugar pesto and full-fat dairy keeps the carbs down. Always recalculate based on the specific products you use.

Why add the garlic in two stages? The first clove cooks into the base for a mellow, rounded depth, while the second goes in near the end for a brighter, fresher garlic note. It's a small trick that gives the dish more dimension.

Recipe Card

Pesto Chicken Cauliflower Rice

A quick, cheesy, low-carb skillet that turns leftover chicken and riced cauliflower into a 15-minute dinner.

Prep time: 7 minutes
Cook time: 8 minutes
Total time: 15 minutes
Course: Dinner
Cuisine: Gluten-free
Servings: 2

Ingredients

1 cup shredded chicken
2 1/2 cups cauliflower rice
1 tomato, chopped
2 garlic cloves, minced
2/3 cup shredded mozzarella (or other cheese)
1 cup arugula
3 tbsp thinly chopped dill
1 tbsp olive oil
1/2 cup milk
1 tbsp tomato paste
2 tbsp red pesto
Salt and black pepper, to taste
Optional: parmesan cheese, to finish

Instructions

Make the cauliflower rice using a food processor or grater. About half a cauliflower head yields roughly 2 1/2 cups. Store-bought riced cauliflower also works.
Heat the olive oil in a skillet over medium-high and saute the chopped tomato for 1 to 2 minutes. Stir in the cauliflower rice and one garlic clove, then add the chicken, tomato paste, pesto, and a pinch of salt. Cover and cook for 2 to 3 minutes.
Add the milk and half of the shredded cheese. Cover again and cook for 2 to 3 minutes.
Stir in the remaining cheese and the second garlic clove. Add the dill and arugula and cook for about 2 more minutes, until the greens wilt.
Serve immediately, finished with parmesan and black pepper if desired.

Notes

Frozen cauliflower rice works; cook uncovered an extra minute or two if the pan looks watery.
For a vegetarian version, leave out the chicken and add white beans or mushrooms.
Best fresh, but keeps refrigerated for up to 3 days. Reheat with a splash of milk.

Approximate nutrition (per serving, 2 servings total)