01 - Preheat the oven to 375°F. Lightly grease an 8x8-inch baking dish for even cooking and easy cleanup.
02 - Combine softened cream cheese, mayonnaise, soy sauce, Worcestershire sauce, minced garlic, ground black pepper, and salt in a large mixing bowl. Beat using a hand mixer or whisk until smooth.
03 - Gently fold in the lump crab meat, diced avocado, and sliced green onions until just combined, preserving the texture of the mix-ins.
04 - Spread the crab mixture evenly into the prepared baking dish, smoothing the top with a spatula.
05 - Lay the wonton triangles in a single, slightly overlapping layer on top of the filling. Brush with melted butter and sprinkle sesame seeds over if desired.
06 - Place in the preheated oven and bake for 20 to 25 minutes, until the filling bubbles and the wontons are golden and crisp.
07 - Allow the bake to cool for 5 minutes before serving. Offer additional sliced green onions or sweet chili sauce on the side as preferred.