Pineapple Walnut Upside Down Bundt Cake - Diamond Nuts

Ingredients

• 1/2 cup Diamond Nuts® Chopped Walnuts
• 1/4 cup all purpose flour
• 1/4 cup packed light brown sugar
• 1/2 tsp cinnamon
• 2 tbsp butter, melted
• 1/4 cup packed light brown sugar, divided
• 2 cans pineapple slices (8 oz each)
• 1/4 tsp ground cinnamon
• 1/2 cup chopped walnuts
• 3/4 cup unsalted butter, room temperature
• 1 1/2 cups sugar
• 1/4 cup sour cream, room temperature
• 1 tsp vanilla extract
• 2 1/2 cups all purpose flour
• 3 1/2 tsp baking powder
• 1/2 tsp salt
• 1/3 cup milk, room temperature
• 2/3 cup pineapple juice, room temperature