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Step 1
Add rapeseed oil into a large/deep pan. Increase the heat to medium/high and add the chicken into the pan. Season with salt and pepper and leave to fry for 4 minutes, or until you achieve a nice sear.
Step 2
Rotate and continue to cook for another 3 minutes, reducing the heat slightly. Set aside and deglaze the pan with a splash of chicken stock.
Step 3
Add the onion and chopped cauliflower stem into the pan. Season with salt and pepper and fry for around 4 minutes, then add the tomato puree and continue to fry for a further 4 minutes, adding the garlic in for the final minute.
Step 4
Pour the passata, white wine vinegar and chicken stock into the pan. Stir to combine and reduce the heat to a simmer. During this time, add your rigatoni to salted boiling water and cook to the packet time minus 1 minute. Add the cauliflower florets half way through.
Step 5
Add your chicken back into the sauce, along with the spinach to warm through/wilt, then add the cream and remove from the heat. Season with salt and pepper and when ready, reserve a mug full of pasta water and drain.
Step 6
Add the rigatoni & cauliflower into the sauce and stir until well combined. Loosen if necessary with the reserved pasta water and top with torn mozzarella.
Step 7
You can optionally pop under the grill or serve immediately with fresh basil! Enjoy.