In 8-quart Dutch oven, cook beef and onions over medium-high heat until beef is thoroughly cooked, stirring frequently; drain. Stir in taco seasoning mix, tomatoes, tomato sauce and corn. Heat to boiling. Reduce heat to medium; cook 10 to 15 minutes, stirring occasionally, until corn is tender.
Stir in beans; heat to boiling. Reduce heat to medium; cook about 10 minutes, stirring occasionally, until thoroughly heated and flavors are blended.
Spoon 6 cups of the chili into each of four 6-cup freezer/microwavable containers. Cool 30 to 45 minutes. Cover; refrigerate up to 3 days or freeze up to 2 months.
Thaw 1 container of chili in refrigerator for 48 hours, or uncover and thaw in microwave on Defrost 30 to 40 minutes.
To heat refrigerated or thawed chili, cover loosely and microwave on High 6 to 8 minutes or until thoroughly heated, stirring once or twice. Spoon into 4 individual serving bowls. Sprinkle each serving with about 1/4 cup chips and 2 tablespoons cheese.