Vegan Chili

Name: Vegan Chili
Prep time: 15 min
Total time: 15 min
Cuisine: American, Latin American
Ingredients: 1 tbsp. olive oil; 2 bell peppers, diced; 1 yellow onion, chopped; 2 stalks celery, diced; 3 cloves garlic, minced; 2 tsp. chili powder; 1 tsp. smoked paprika; 1 tsp. cumin; 1 tsp. dried oregano; kosher salt; Freshly ground black pepper; 1 (12-oz) bottle Mexican beer such as Modelo; 1 large sweet potato, cut into 1/2" cubes; 1 (15-oz) can black beans, drained and rinsed; 1 (15-oz) can pinto beans, drained and rinsed; 1 (28-oz) can diced fire-roasted tomatoes; 2 c. vegetable broth; 1 avocado, sliced; Lime wedges; thinly sliced scallions