Heat oil over medium-high heat in a large skillet. Saute onions and garlic until onions are soft and translucent, about 4 minutes. Add spices, stir to mix fully, and cook for 2 to 3 minutes. Add black beans and chicken and season with salt and pepper, to taste. Cook until black beans are heated through, about 5 minutes, then remove from heat and let mixture cool fully. Add cilantro and stir well.
Preheat the oven to 375 degrees F.
Lay out a sheet of puff pastry on a lightly floured surface. Flour the top of the dough and roll out the puff pastry until it is about 1/16-inch thick and about 12 inches by 16 inches.
Trim edges to size, if necessary. Cut 4-inch strips crosswise and lengthwise making 12 (4 by 4-inch) squares. Make sure the squares are well floured and stack them in a little pile.
To form empanadas:
Fill a little dish with some room temperature water. Imagine each square you work with is separated in half by a diagonal. Place a couple tablespoons of filling in the top half. Dip a finger into the water and moisten the edges of the top half with water. Fold the bottom half to meet the edges of the top half. Use a fork to pinch and seal the edges. Lightly brush the tops with vegetable oil. Place finished pockets on a nonstick baking sheet and bake about 12 to 14 minutes, or until golden brown and puffy.
In a medium bowl, combine the chopped tomatoes, pineapple, garlic, jalapeno and scallions. Mix well. Add lime juice, sugar, and salt, to taste. Toss well. Serve with the Chicken Empanadas.
Recipe courtesy of Dave Lieberman