Saute Garlic And Scallions In Butter. Sprinkle With Flour And Cook Fro A Few Minutes. Add Bell Pepper And Squash. Cook For 5 Minutes. Add Chili Powder, Paprika, Cumin And Oregano. Cook For 1 Minute. Add Tomato Puree, Tomatoes, And Broth. Cover And Simmer For 15 Minutes. Add Pasta And Cook Until Al Dente. Add Milk And Beans And Heat Through. Season With Salt And Cayenne. Pass The Cheese.