Frito Pie in a Jar

In a large saucepan, heat oil over medium-low heat. Add onion, bell pepper, and garlic and cook, stirring, until vegetables begin to soften, about 10 minutes. Increase heat to medium and add ground beef. Cook, stirring, until meat is no longer pink, 5 to 7 minutes. Stir in tomatoes, tomato paste, cumin, oregano, and salt and season with black pepper. Bring to a simmer, then reduce heat and simmer, partially covered, 10 minutes. Add beans and simmer, partially covered, until vegetables are tender and chili thickened, about 5 minutes longer. Let cool. Among six mason jars, layer a handful of Fritos and chili. Top with a big spoonful of sour cream and a couple slices jalapeño.