Meanwhile, bring a large pot of water to a boil.
Cook pasta for 2 minutes less than the package directions.
Drain the pasta and transfer to a large bowl.
Transfer the cauliflower to a food processor or blender.
Add milk, chipotle and adobo sauce; puree until smooth.
Dry the large saucepan.
Add oil and heat over medium heat.
Add onion and cook until softened and transparent, 2 to 3 minutes.
Add garlic and cook until fragrant, 1 minute.
Add spinach and cook until lightly wilted, 2 minutes.
Reduce heat to medium-low, carefully add the cauliflower mixture and stir to combine.
Stir in salt and mustard.
Gradually whisk in Cheddar and mozzarella just until smooth, about 1 minute.
Pour the sauce over the pasta and gently stir to combine.
Garnish with pepper and paprika, if desired.
- Daily Values (DVs) are the recommended amounts of nutrients to consume each day.
(-) Information is not currently available for this nutrient.
