Put fresh basil leaves, garlic, lemon juice, pine nuts, pecorino cheese, black pepper, and salt in a food processor or blender. Process the ingredients until it reaches a paste-like consistency. Transfer the pesto to a bowl and set aside.
Add water to a large pot and season it with salt. Once the water starts to boil, add bucatini pasta and cook it according to the package instructions or until al dente. Drain the pasta, reserving some of the pasta water.
Take a large pan and place it over medium heat, add the olive oil.
Once the olive oil heats up, add minced garlic and sauté for 30 to 40 seconds.
Cook the peas for a minute or two and add a splash of pasta water at this point.
Incorporate the pesto and season with black pepper and salt. Mix well and continue cook until the liquid evaporates.
Now toss in the cooked pasta and grated pecorino cheese.
Garnish the dish with freshly chopped basil and enjoy!