Take butter and eggs out, and let it warm to room temperature.
Preheat oven to 350 degrees.
Combine the dry ingredients (Flour, Almond flour, baking powder, baking soda, cinnamon, lemon zest and salt. Measure them out to a mixing bowl. Then stir to combine. Set aside.
In a large mixing bowl, add sugar. Then add butter, vanilla, and apple cider vinegar. Beat together until light and fluffy.
Add two eggs and mix to combine. Then slowly add milk and yogurt.
Add dry ingredients and stir to combine.
Gently fold in blueberries.
Optional - sprinkle topping over muffin batter before placing in the oven.
Pour the batter into paper lined muffin pan cups.
Bake for 25-30 minutes until slightly golden brown on top.
Remove from oven and cool for 5-10 minutes before serving.Enjoy!