In a large skillet, heat the oil over medium-high heat. Add the ground beef and cook, breaking apart with a spatula, 5 to 8 minutes, until cooked through.
Add the taco seasoning and 1/4 cup water. Sauté for a few minutes, or until the extra liquid is absorbed.
Meanwhile, halve the avocados and discard the pits. Scoop most of the avocado flesh out into a large bowl. Set the avocado shells aside.
Add the lime juice, sea salt, and black pepper to the scooped out avocado flesh. Mash together, leaving some chunks. Adjust the lime juice to taste. Stir in the halved tomatoes and diced onions.
Stuff the avocado mixture back into the avocado shells. Top with the taco meat, shredded cheese and cilantro.
If you are counting WW points, prepare this recipe with 1/2 tablespoon oil, lean ground turkey and reduced-fat shredded cheese.
Make your own tacos seasoning: combine 2 tablespoons chili powder, 1 tablespoon ground cumin, 1 tablespoon sea salt, 1/2 tablespoon black pepper, 1/2 tablespoon smoked paprika, 1 teaspoon dried oregano, 1 teaspoon garlic powder, 1/2 teaspoon onion powder, 1/8 teaspoon cayenne pepper. This makes 6 tablespoons. You'll need 1 tablespoon for this recipe, so store the rest in a sealed container to use for more taco creations.