Chop the cauliflower and cook for 10 to 15 min. Reserve 1 cup of water and place the cooked cauliflower in your high-speed blender.
Begin cooking the pasta according to package directions.
In a pan add ¼ of oil and sauté the onions over medium heat, 5 min until they are caramelized
Add garlic
Transfer to the blender along with the cauliflower. Add the remaining ingredients, except for the sun dried tomatoes.
Blend until creamy
Add remaining ½ cup water only if the sauce is too thick.
Add salt and pepper to taste and mix again. Set aside.
Season the chicken with salt and pepper
Cook the chicken in the pan or as you like.
Plate by adding the mixed pasta, chicken and a little more sauce
Optional: Add chopped parsley on top.