Grease 13x9x2 inch baking pa. in medium bowl stir together first 4 ingredients. Stir in mayonnaise and extract until mixture resembles coarse crumbs, set aside.
In large bowl with mixer at low speed beat cake mix, milk and eggs just until blended. Increase speed to medium beat 2 minutes. Spread in prepared pan.
Arrange pears in one layer on top of batter; sprinkle with mayonnaise mixture. Bake in 325degree oven 50 to 60 minutes or until cake tester inserted in center comes out clean. Cool slightly in pan. Serve warm. Great with sliced peaches too.
