You will need 2 large pieces of parchment or foil.
Preheat the oven to 400°F.
Slice the chicken into six thin filets.
Place the black beans in a small bowl.
Add the olive oil, beer, water, chili powder, oregano, cumin, salt, pepper, cilantro, and pumpkin seeds.
Fold together until well blended.
Fold the parchment (or foil) in half so that it is almost a square (15 inches x 12 inches). Starting at one end of the folded edge, cut a half of a heart shape in such a way that when the parchment is opened it is in the shape of a heart.
Place half of the bean mixture on each parchment paper.
Place 1 teaspoon of the butter on top of the bean mixture.
Place half of the chicken filets on top of the beans. Center the filets on one side of the cut heart so that the other side will fold over the top of the filets easily.
Top with the remaining bean mixture.
Sprinkle the onions and peppers over the top of the chicken and beans.
Close the parchment by rolling the edge inward starting at the point of the heart and working around to the base of the heart. The pouch with the chicken inside will be in the shape of a large half circle.
Place the pouches on a cookie sheet and then into the oven. Reduce the heat to 375°F and cook for 25 minutes.
Remove each pouch to a plate and let stand 30 seconds before cutting the pouch open. There will be some hot steam that escapes when the parchment is cut (be careful).
