Roast the peanuts in a pan without oil until they turn pink. Wash the basil leaves and drain with a towel. Peel the garlic and finely chop it all. Prepare the pesto by mashing the basil, garlic, salt, and peanuts with a mixer. Add the grated cheddar cheese and oil and mix. Then sweeten it with black pepper. Boil the pasta in salted water and mix with pesto and serve.