Black beans and rice meal with fried plantains

Name: Black beans and rice meal with fried plantains
Ingredients: 1/2 teaspoon avocado oil (or other neutral-flavored cooking oil); 1/2 medium-sized yellow onion (chopped); 1 clove garlic (minced); 1 can (15-ounce) black beans (drained and rinsed (1 1/2 cups)); 1/2 cup water; 1/2 teaspoon cumin; 1/2 teaspoon ancho chili powder; 1/2 teaspoon paprika; 1/4 teaspoon salt; 1 avocado (pitted and removed from peel); 1 Tablespoon finely chopped onion; 1 Tablespoon chopped cilantro leaves; 1/2 teaspoon lime juice (+ more for garnish); Pinch of salt; 1 teaspoon avocado oil (or other neutral-flavored, high heat oil); 1 plantain (cut in 1/2 inch pieces on a diagonal); 1 cup cooked brown rice