Cook spaghetti according to package instructions (omit added salt)
Mix all of the meatball ingredients together in a bowl, then form about 1½ inch balls, and place them on a parchment-lined baking sheet.
Bake the meatballs at 375 °F for about 15 minutes, or until an instant-read thermometer registers 165 °F
Meanwhile, purée the red peppers with a food processor or immersion blender.
In a saucepan, mix the red pepper puree with the ½ cup of chicken stock and 3 tablespoons of flour until it comes to a boil, then reduce it to a simmer over medium-low heat for about 2 minutes. The flour will thicken the liquid up.
Stir in the skim milk
Add the parmesan cheese until fully melted and incorporated into the sauce
Mix the sauce and cooked spaghetti together, then arrange the meatballs on top and garnish with fresh basil.