pineapple upside down muffins

Ingredients

• TOPPING:
• 2 tablespoons packed light brown sugar
• 2 tablespoons chopped walnuts or pecans (optional)
• 1 can 10 ounce - pineapple slices
• MUFFINS;
• 3/4 cup whole wheat flour
• 3/4 cup all-purpose flour
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1 tablespoon ground cinnamon
• 2 large eggs
• 1/2 cup packed light brown sugar
• 1/4 cup canola oil
• 2 tablespoons pineapple juice or orange juice
• 1 teaspoon vanilla extract
• 1 can crushed pineapple, not drained (8 ounce)
• 1 cup carrot, grated, (1 large)
• 1/2 cup old fashioned oats
• 3/4 cup raisins, preferably baking raisins - (see note)
• 1/4 cup chopped walnuts or pecans (optional)