Yes, you can use milk as a substitute for cream or crème fraiche for a creamy bacon pasta sauce. However, you'll notice a much thinner sauce unless you add a cornstarch or flour slurry.   Treat yourself to a yummy dessert after enjoying a serving of bacon pasta by making one of the following recipes: Steamed Lemon Cake, Chocolate Swirl Custard Toast, or Chocolate Tiffin.