Step 1

Heat oven to 350°F. Grease 12-cup fluted tube cake pan with shortening; lightly flour.

Step 2

In medium bowl, mix flour, baking powder, baking soda and salt with spoon; set aside.

Step 3

In large bowl, beat 1 cup butter with electric mixer on medium speed about 2 minutes or until creamy. Beat in 2 cups powdered sugar. Add eggs, one at a time, beating well after each addition. Add flour mixture to butter mixture alternately with milk, beating well on low speed after each addition. Beat on low speed 1 minute. Stir in lemon juice, lemon peel and zucchini. Spoon into pan.

Step 4

Bake 50 to 60 minutes or until toothpick inserted in center comes out clean. Cool 15 minutes in pan. Remove from pan onto serving plate. Cool completely, about 1 1/2 hours.

Step 5

In 1-quart saucepan, heat all glaze ingredients just to boiling over medium heat, stirring constantly; remove from heat. Let stand 30 minutes until slightly thickened. Drizzle over cake.