Heat a large skillet or pot over medium heat. Add a drizzle of oil.
Sauté the shallot in oil over medium heat for a few minutes until they soften. Add the garlic and red pepper flakes and sauté another minute or so.
Add the pesto and briefly cook it before adding the water.
Bring the water to a boil and then add salt and the pasta. Cook for about 8 minutes for large pasta shells. Check your package for different shapes.
Add the peas in the last 2-3 minutes of cooking time.
Add the cream and the cheese and stir to heat it through.
Add the lemon juice. Taste the pasta and season as needed.
To serve garnish with more grated Parmesan cheese and fresh cracked black pepper.
Video
Notes
Use 3 1/2 - 4 cups of water, depending on how saucy or dry you want your pasta to be.Change up the vegetables if you like. When adding frozen vegetables, either add more time to the cooking time or thaw the vegetables first. Frozen vegetables will stop the water from boiling for a few minutes but thawed vegetables stop it from boiling for less time.Remember to stir the pasta often so it doesn't stick together while cooking.Store leftovers in the fridge for 4-5 days. Reheat in a microwave or a skillet, adding a splash of water as needed.