Preheat oven to 375°. Place first nine ingredients in a food processor; pulse until crumbly. Grease an 8-in. square baking dish with 1 teaspoon butter.
Peel, core and cut each pear lengthwise into 8 wedges; toss with lemon juice. Place in prepared baking dish.
In a small saucepan, combine syrup, butter, orange zest and cinnamon; bring to a boil, stirring constantly. Pour over pears. Sprinkle with crumb mixture. Bake until golden brown and pears are tender, 30-40 minutes. Serve with ice cream.