1 tablespoon vegetable oil
1 large onion, chopped (1 cup)
1 medium green bell pepper, chopped (1 cup)
3 cups water
1/2 cup taco sauce
2 teaspoons chili powder
1/2 teaspoon salt
1/4 teaspoon ground cinnamon
2 cans (10 ounces each) diced tomatoes and green chilies, undrained
4 ounces uncooked spaghetti, broken into thirds (1 1/2 cups)
1 can (15 to 16 ounces) pinto beans, rinsed and drained
Sour cream, if desired
Jalapeño chilies, if desired
Heat oil in 4-quart Dutch oven over medium-high heat. Cook onion and bell pepper in oil 3 to 5 minutes, stirring occasionally until crisp-tender.
Stir in remaining ingredients except spaghetti and beans. Heat to boiling; reduce heat to medium-low. Simmer uncovered 5 minutes, stirring occasionally.
Stir in spaghetti and beans. Heat to boiling; reduce heat to medium. Cook uncovered 8 to 10 minutes, stirring occasionally until spaghetti is tender. Garnish each serving with sour cream and jalapeño chilies.