Rub the zest into the sugar. In a bowl, add the sugar and lemon zest. Use your fingertips or a rubber spatula to rub the zest into the sugar to release its oils. It should smell very fragrant.
Add the rest of the dry ingredients: To the lemon-sugar mix, mix in the flour, salt, baking powder, and ground cinnamon.
Mix the wet ingredients separately: In another bowl, add and whisk the plant milk, lemon juice, oil, applesauce, and vanilla extract.
Add the wet ingredients to the dry. Stir gently to combine with a whisk, fork, or wooden spoon. Do not overmix. A few lumps in the batter is fine.
Coat and gently fold in the blueberries. Coat the blueberries with 2 tbsp of flour before folding them into the batter (or they’ll sink to the bottom of each muffin).
Fill and bake: Divide the batter evenly into 12 giant greased/ lined muffin holes, filling each all the way to the top. Bake the muffins at 350°F (175°C) for 25-30 minutes or until a toothpick inserted in the centre comes out clean.
Cool and enjoy: Let the muffins cool a bit before digging in. Enjoy with a nice cup of coffee or tea.