Preheat the oven to 375 degrees.
Line two baking sheets with parchment paper.
In a mixing bowl, combine the flour, baking soda, cinnamon, and salt.
Using the bowl of your mixer, mix the butter and granulated sugar.
Add the vanilla extract, egg, and lemon juice. Mix on low speed until combined.
Combine the dry batter with the wet ingredients.
To prepare the cinnamon filling, combine cinnamon and granulated sugar in a separate mixing bowl.
Shape the now-prepared cookie dough into ball shapes and coat each piece with the cinnamon filling, and put them on the baking sheet. Keep coating until each piece is covered enough.
Use only one baking sheet at a time and bake for 10 minutes.
Do not cook longer, even if they still look undercooked. The middle part continues cooking while cooling on the parchment sheet.
Let it sit for 10 minutes before serving.