Prep your pan and oven: Preheat the oven to 375°F (190°C). Line a 12-cup muffin tin with paper liners or lightly coat with cooking spray.
Mix dry ingredients: In a large bowl, whisk together all-purpose flour, white whole wheat flour, baking powder, baking soda, and salt.
Whisk wet ingredients: In a separate medium bowl, whisk the Greek yogurt, almond milk, egg, sugar, oil (or applesauce), and vanilla until smooth.
Add lemon zest if using.
Combine gently: Pour the wet mixture into the dry ingredients. Stir with a spatula just until a few dry streaks remain. Do not overmix.
Fold in strawberries: Gently fold in the chopped strawberries until evenly dispersed.
If the berries are very juicy, toss them with a teaspoon of flour first to reduce bleeding.
Fill the cups: Divide the batter evenly among the 12 muffin cups. They will be about two-thirds full.
Bake: Place the pan in the center of the oven and bake for 13–16 minutes, or until the tops are set and a toothpick inserted in the center comes out clean or with a few moist crumbs.
Cool: Let the muffins cool in the pan for 5 minutes, then transfer to a wire rack to cool completely. This helps keep the texture light.
Serve: Enjoy plain, or add a light dusting of powdered sugar just before serving if you like a touch more sweetness.