"Filipino spaghetti is a great comfort food; being Filipino I had never had this until a friend asked me about it. I try to keep it light by using nutrient-packed food, like whole grain pasta, and low-fat meats."
Cook Italian sausage links in a wok over medium-high heat until browned, 5 to 10 minutes. Add ground pork and break up into bite-sized chunks. Stir in garlic until almost browned; lower heat to medium-low. Mix in tomato sauce and banana ketchup.
Bring a large pot of lightly salted water to a boil. Cook spaghetti in the boiling water, stirring occasionally, until tender yet firm to the bite, about 12 minutes. Drain.
Stir summer squash, carrot, and celery into pork mixture; cook until ground pork is cooked through, 15 to 20 minutes.
Top spaghetti with the pork mixture and sprinkle with Parmesan cheese.