In 3-quart saucepan, heat oil over medium-high heat.
Add onion and bell pepper; cook 5 minutes, stirring occasionally, until crisp-tender.
Stir in remaining ingredients except tortilla chips and cheese.
Heat to boiling.
Reduce heat to medium-low; simmer uncovered 10 to 15 minutes, stirring occasionally.
Sprinkle individual servings with chips and cheese.
Notes / Tips / Wine Advice:
Pinto beans are two-tone kidney-shaped beans widely used in Central and South American cooking. They turn pink when cooked and are the most widely used bean in refried beans.