2tablespoonsmasa harina, more if desired/needed (see notes)
Optional toppings: jalapeño, cilantro, sour cream or Greek yogurt, cheese
In a large skillet, heat oil over medium-high heat. When hot, add meat in a single layer (you’ll need to cook it in batches). Brown for 1-2 minutes on each side and then move to slow cooker. Continue this process, adding more oil to pan if needed, until all meat is browned and in slow cooker.
In the same pan, add onions, celery, jalapeño, salt, and pepper. Saute until celery is softened and onion is translucent. Add garlic and continue to cook for 1-2 minutes or until fragrant.
Add chili seasoning, brown sugar, and oregano and continue to cook, stirring, until fragrant (1-2 minutes). Add tomato paste and stir to coat vegetables with tomato paste. Keep stirring to prevent burning. Add beer and cook for 4-5 minutes or until slightly reduced. Add this mixture to the slow cooker.
Add crushed tomatoes, diced tomatoes, and bay leaf. Stir to combine all ingredients. Cover and cook on low for 6-8 hours or until meat is tender.
Remove bay leaf and stir in parsley and cilantro. Sprinkle masa on top and stir in. If needed, add more (1 tablespoon at a time) to thicken chili further. Keep in mind it will thicken slightly if it continues to cook, and also as it cools.