Good-Cooking - Simple Lemon Bars

Ingredients

• 1 (18.25 ounce) box yellow cake mix
• 2 cups crushed corn flakes
• 1/2 cup firmly packed brown sugar
• 1/3 cup chopped nuts
• 1/2 cup softened butter
• 1 small box lemon pudding (NOT INSTANT)
• 1 can sweetened condensed milk
• 1 teaspoon vanilla extract
• 1 cup confectioners' sugar
• 1/4 teaspoon vanilla extract
• 3 to 5 teaspoons water