1. Preheat the oven to 375 degrees F.
2.Pears: Cut pears in half and then into thin slices. Put them in a large bowl and toss with the brown sugar, lemon juice and zest to blend, set aside.
3. Topping: Combine flour, brown sugar, salt, cinnamon, ginger and nutmeg in a medium bowl. Add the butter and almonds and break them up with your fingers integrating the dry ingredients with the butter and nuts.
4. Grease the bottom and sides of a shallow square baking dish (8 square inches) with the remaining tablespoon of butter. Layer the pears in the dish and top evenly with the nut topping. Place the dish in the center of the oven and bake until the pears are tender when pierced with the tip of a knife. The topping should be golden brown as well, about 40-45 minutes. Set aside to cool a few minutes before serving.