1. In a pan over low heat, melt 4 Tbsp. butter. In a bowl, mix flour, 2 Tbsp. brown sugar, baking powder, 1/2 tsp. cinnamon, allspice, ginger, nutmeg, cloves and salt. In a smaller bowl, whisk milk and egg. Add milk mixture and 3 Tbsp. melted butter to flour mixture; stir until well blended.
2. Preheat oven to 200ºF. Warm a 6-inch nonstick waffle iron; brush with 1 Tbsp. melted butter. Spoon in 1/2 cup batter; spread evenly. Cook until golden brown and firm, 2 to 3 minutes. Transfer waffles to a plate and keep warm in oven. Cook remaining waffles.
3. Melt remaining 1 Tbsp. butter in a skillet over medium heat. Add pears and sprinkle with lemon juice, remaining 2 Tbsp. brown sugar and 1/4 tsp. cinnamon. Cook, stirring gently, until juices are caramelized and pears are tender, 3 to 4 minutes.
4. Transfer waffles to 4 serving plates and top with pears. Serve immediately.