In a large stock pot, cook the noodles according to package instructions. Drain the noodles, reserving about 1/2 cup of pasta water. Set aside.
Meanwhile, make the sauce. In a blender add cottage cheese, milk, Parmesan cheese, garlic, unsalted butter, all-purpose flour, and 1 tsp kosher salt. Blend until smooth. Transfer the Alfredo sauce to a large non-stick skillet. Bring the sauce to a medium simmer. Stir frequently until slightly thickened, about 5 to 7 minutes. Toss in the spinach if using and stir to combine.
Next, add in the noodles and toss in the sauce until well coated. If the sauce is thick add in a splash or two of the reserved pasta water to help thin out. Once coated, divide among bowls and top with more Parmesan cheese and red pepper flakes.
Author: Lauren Grier
Course: Dinner
Cuisine: American, Italian
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