Cook the pasta / macaroni per instruction on the cover. Keep it aside
Preparing Bechamel (white) Sauce- Heat 1 tablespoon of butter / oil in a thick bottom pan. Add all purpose flour to the melted butter. Stir until the color changes to golden brown and turns aromatic. It takes about 1 to 1.5 mins in medium low fire. Add milk gradually while adding milk mix the flour well. bring it boil. Add black pepper, Italian seasoning, Salt and Red chilli flake. Mix well. Let it boil. Add double cream / cream and mix well. Simmer it.
Heat the another non stick kada. Add rest of oil. When it is hot add grated Garlic and fry till it is brown. Add onion fry till onion is cooked. Add spinach and salt. Cook the spinach. Once it is cooked add in the white sauce and mix it well. Add black pepper, Italian seasoning, Salt and Red chilli flake. Mix well. Let it boil.