Preheat oven to 400 degrees F. Line a baking sheet with parchment paper. In a small bowl stir to combine the walnuts, rolled oats, chili powder, salt, 1 tablespoon maple syrup and olive oil. Spread evenly onto prepared baking sheet and bake for 15-20 minutes turning twice for a golden crunch. Remove and allow to cool.
In a large oven safe sauté pan, melt butter over medium high heat. Place pears in pan, cut side down, and cook until golden and caramelized, about 5 minutes.
Add cranberries, 1/2 cup maple syrup, juice and zest of 1/2 orange and allspice to the pan. Transfer to the oven and bake or 30 minutes or until cooked through. Turn the pears half way through the baking time and baste with pan juices.
Spread yogurt onto a serving plate or platter and top with pears and cranberries. Sprinkle spiced walnut granola over the pears and drizzle with orange maple pan sauce. Garnish with mint sprigs to serve.