A flavorful and easy-to-make pasta dish with a spicy tomato sauce.
Heat the olive oil in a saucepan over medium heat.
Using extra virgin olive oil enhances the flavor of the sauce.
Add the chopped onion and garlic to the saucepan and sauté until softened.
Stir frequently to prevent the garlic from burning.
Stir in the chopped tomatoes, chili flakes, basil, and sugar. Season with salt and pepper.
Crush the tomatoes slightly with the spoon for a smoother sauce.
Simmer the sauce for 40 minutes, stirring occasionally, until thickened.
Cover the saucepan partially to prevent splattering.
Cook the penne pasta in a large pot of salted boiling water until al dente.
Reserve a cup of pasta water before draining to adjust the sauce consistency if needed.
Drain the pasta and mix it into the sauce, ensuring it's well coated.
Add a splash of reserved pasta water if the sauce is too thick.
Serve the pasta hot, garnished with grated Parmesan cheese.
Top with extra basil leaves for a fresh touch.