In a large dutch oven or heavy-bottomed deep pot, add olive oil and heat over medium heat. Once shimmering, add onion, bell pepper and jalapeño and cook for 5-7 minutes, or until the vegetables have softened and the onion is translucent.
Add the chili powder, cumin and a pinch of salt and pepper and cook 1-2 minutes or until the spices begin to toast and smell fragrant.
Add the tomatoes, black beans, quinoa and water and bring the mixture to a boil. Reduce heat to a simmer, then cover and cook over low heat for 20-25 minutes or until the quinoa is tender and the chili has thickened.
Taste the chili, adding a pinch more salt and pepper as needed. Top with optional toppings and serve warm.
Notes
Tip: Store any leftover chili in a glass container to avoid the tomato staining a plastic container.