Duke's Streusel Coffee Cake – Duke's Mayo

Ingredients

• 21/2 cups all purpose flour, divided
• 1/2 cup packed light brown sugar
• 1/2 cup finely chopped pecans
• 2 tsp. ground cinnamon
• 1/4 tsp. ground nutmeg
• 11/4 cups Duke's Mayonnaise, divided
• 3/4 cup granulated sugar
• 11/2 tsp. baking powder
• 1/4 tsp. baking soda
• 1/4 tsp. salt
• 2 large eggs, lightly beaten
• 1 tsp. vanilla extract