Vegetarian Arepas with Avocado and Plantains

Name: Vegetarian Arepas with Avocado and Plantains
Ingredients: For the arepas:; 2 cups masarepa, P.A.N. harina blanca, or any other pre-cooked corn meal or corn flour. (See note above.); 2 1/2 cups warm water; 1 Pinch of salt; 3 cups Vegetable oil for frying; For the fillings:; 1 can of black beans, drained and rinsed (or 1 1/2 cups cooked); 1 clove garlic, minced; 2 teaspoons cumin; 2 plantains, either cut into rounds or cut into half width-wise and then into 1⁄4-inch strips; 1 splash More vegetable oil; 1 ripe avocado, chopped; 1 small onion, diced (I like yellow but you do you); 1 jalapeño, seeded, cored, and finely diced; 1 handful fresh cilantro, chopped; Juice of 1 lime; Salt and pepper