1. Preheat oven to 400 degrees F. Coat a 12-cup muffin pan with cooking spray.
2. Process almonds, 2 tablespoons all-purpose flour, 2 tablespoons brown sugar, 1 teaspoon orange zest and 1/4 teaspoon salt in a food processor until finely ground. Transfer to a small bowl, drizzle with 2 tablespoons oil and stir to combine.
3. Whisk the remaining 3/4 cup all-purpose flour, whole-wheat flour, baking powder, baking soda and the remaining 1/4 teaspoon salt in a large bowl. Whisk the remaining 1/2 cup brown sugar, 2 teaspoons orange zest and 1/4 cup oil in a medium bowl with buttermilk, orange juice, egg and vanilla extract until well combined. Make a well in the center of the dry ingredients and pour in the wet ingredients; stir until just combined. Add strawberries; stir just to combine. Divide the batter among the prepared muffin cups. Sprinkle with the almond topping, gently pressing into the batter.
4. Bake the muffins until golden brown and a wooden skewer inserted in the center comes out clean, 18 to 20 minutes. Let cool in the pan for 10 minutes, then transfer to a wire rack to cool for at least 5 minutes more before serving. Variation: For Strawberry-Basil Muffins, omit orange zest and use 1/4 cup additional buttermilk in place of orange juice. Stir in 1/4 cup chopped fresh basil with the berries in Step 3.
White whole-wheat flour, made from a special variety of white wheat, is light in color and flavor but has the same nutritional properties as regular whole-wheat.