Bring a large pot of water to boiling and cook pasta according to box directions.
In a separate skillet, heat the olive oil over medium heat.
Add the onion and cook until softened, about 5 minutes. Season with salt and pepper.
Add the garlic and cook another minute.
Add the roasted red peppers and cook another couple of minutes to warm through.
Transfer the mixture to a blender along with the half and half and puree.
Add the goat cheese and blend until creamy.
Once the pasta is cooked, drain, saving ½ cup of pasta water.
Return the pasta to the pot and then add the roasted red pepper sauce. Stir to combine. Add the pasta water, if needed. I don't add any when I make this but some people prefer a thinner sauce.
Serve topped with Parmesan cheese and fresh chopped basil. Enjoy!