Slow Cooker Ranchero Beef Stew

Name: Slow Cooker Ranchero Beef Stew
Ingredients: 1 lb stew meat, season with salt, pepper, and garlic powder; 1 onion, chopped; 4 carrots, roughly chopped; 2 medium potatoes, chopped; 1 red pepper, chopped; 4 cloves garlic, minced; 1 28 oz can fire roasted crushed tomatoes; 1 14 oz can fire roasted crushed tomatoes; 1 4 oz can green chiles; 1 tbsp chilis in adobo sauce; 2 tsp chili powder; 2 tbsp Mexican oregano; salt and pepper to taste; Top with avocado, chopped onion, cilantro, and or yogurt/sour cream