Waldorf Salad Cake

Ingredients

• 3 c. all-purpose flour
• 2 tsp. baking soda
• 1/2 tsp. salt
• 2 tsp. ground cinnamon
• 2 eggs
• 1 1/2 c. sugar
• 1 tsp. vanilla
• 1 c. real (not imitation) commercial mayonnaise
• 1/2 c. milk
• 3 c. unpeeled, diced (1/4-inch) red apples (about 1 1/4 lb.)
• 1 c. coarsely chopped walnuts
• 1/2 c. finely diced (1/8-inch) celery