To prepare a crispy wontons appetizers recipe, you'll need: 2 tablespoons melted butter, 2 teaspoons each kosher salt and ground black pepper, and 1 teaspoon each ground paprika and cayenne pepper. Heat the butter over medium-high heat until it's shimmering. Add the flour and stir until the mixture resembles coarse crumbs. Gradually add the milk, stirring until just combined. Fold in the scallions, then the egg yolks. Form the dough into 1-inch (2.54-centimeter) rounds and flatten them with your hands. Flatten the rounds to about 1/2-inch (1.3 cm) thick. Brush the tops of each wonton with egg wash and sprinkle with sea salt. Bake for 12 to 15 minutes, or until golden brown. Serve warm or at room temperature.