Whisk together mayonnaise, eggs, and vanilla in a large bowl until smooth.
Combine flour and next 7 ingredients in a large bowl. Stir in apple, tossing to coat; stir into mayonnaise mixture. Spread into a lightly greased 13- x 9-inch baking pan. Sprinkle evenly with Crumb Topping.
Bake at 350° for 45 to 50 minutes or until wooden pick inserted in center comes out clean.
You May Like
Sign Up for our Newsletter
Join our newsletter for free recipes, healthy living inspiration, and special offers.