Cut peppers lengthwise into quarters; remove stems, seeds and membranes. Place peppers, cut side down, on a large foil lined baking sheet. Add garlic cloves. Bake at 400 for 20 minutes or until peppers are tender and lightly browned.
meanwhile, cook pasta according to directions on box.
Add peppers, garlic and remaining ingredients (except salt) to a food processor. Blend until almost smooth. Transfer to a saucepan, add salt and heat over medium-low heat until heated through.