the goods:
2 and 1/2 pounds beef chuck roast, cut into 1-inch pieces
2 tablespoons vegetable oil
1 medium white onion, diced medium
1 medium green bell pepper, seeded and diced medium
1 large jalapeno, seeded and diced small (optional)
5 garlic cloves, roughly chopped
1 and 1/2 teaspoons cumin
3/4 teaspoon chili powder
3/4 teaspoon dried oregano
6 tablespoons all-purpose flour
1 and 3/4 cups chicken broth
1 can (14 ounces) diced tomatoes
2 bay leaves
flour tortillas, grated cheddar, sour cream, and cilantro, for serving
Season beef with salt and pepper. In a large skillet, heat 2 teaspoons oil over high. In two batches, cook beef until browned on all sides, 5 minutes per batch (add 2 teaspoons more oil for second batch). Transfer to a slow-cooker. In same skillet, cook 2 teaspoons oil, onion, bell pepper, jalapeno (if using), and garlic over medium, stirring and scraping up browned bits with a wooden spoon, until vegetables are tender, 5 minutes.
Add cumin, chili powder, oregano, and flour and cook 1 minute. Slowly pour broth into skillet, stirring until liquid is smooth. Simmer 2 minutes, then transfer mixture to slow cooker, along with tomatoes and bay leaves. Season to taste with salt and pepper and stir to combine. Cover and cook on high 6 hours.
Serve in tortillas with cheese, sour cream, and cilantro.