Cook pasta according to package, drain and reserve ½ cup pasta water.

To make the sauce heat a small saucepan over medium heat and add olive oil.

When oil is heated add onion and garlic and cook until tender, about 3 minutes.

Add onion, garlic, half of cilantro, lemon juice and avocados to food processor or blender.

Process until smooth, add salt and pepper to taste. Add to warm pasta, stir to combine.

Add pasta water if needed. Garnish with cilantro and pepitas, serve.