Heat oven to 350°F. Generously grease 9-inch square pan with shortening; lightly flour. In medium bowl, mix all topping ingredients. Set aside.
In small bowl, mix flour, baking powder and salt. In large bowl, beat 1 cup sugar and the shortening with electric mixer on medium speed until well blended. Add lemon extract and eggs; beat well. Alternately add flour mixture and milk to butter mixture, beating until well combined. Pour batter into pan.
Drop topping by teaspoonfuls evenly onto batter. Spread topping over batter.
Bake 42 to 47 minutes or until toothpick inserted in center comes out clean. Cool at least 30 minutes. Serve warm or cool.