Beefy Cheesy Green Chile Bake

Name: Beefy Cheesy Green Chile Bake
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: Mexican, American, Latin American
Ingredients: 1 large 27 oz. can roasted and peeled green chiles (See note.); 4 tsp. olive oil; 1 lb. ground beef; salt and fresh-ground black pepper to taste; 4 cups grated Mexican Blend cheese (or use any mild cheese that melts well); 1 small onion, chopped; 1 4 oz. can diced green chiles; 5 eggs; 1/2 cup sour cream, at room temperature; 1/2 tsp. ground cumin; 1/2 tsp. ground chili powder; toppings for serving as desired (see notes)