Heavenly Pears
["1 lb. 13 oz. can pear halves (use 2 cans if cooking for more than 5 people)", "2 egg yolks", "1/4 c. sugar", "2 Tbsp. lemon juice", "2 Tbsp. plus 2/3 c. all-purpose flour", "1/2 tsp. salt", "1/4 tsp. soda", "2/3 c. graham cracker crumbs", "1/3 c. firmly packed brown sugar", "1/2 tsp. cinnamon", "1/2 tsp. vanilla extract", "1/2 c. chopped walnuts", "1/2 c. butter, melted"]
["Preheat oven to 375\u00b0."]
["pear", "egg yolks", "sugar", "lemon juice", "flour", "salt", "soda", "graham cracker crumbs", "brown sugar", "cinnamon", "vanilla extract", "walnuts", "butter"]