Preheat your oven to 350°F (175°C).

In a large mixing bowl, whisk together all-purpose flour, granulated sugar, baking powder, baking soda, salt, and ground cinnamon. Add chopped nuts if desired.

In a separate bowl, mix almond milk, vegetable oil, and vanilla extract until well combined.

Gradually pour the wet mixture into the dry ingredients, stirring gently until combined.

Grease a 9-inch round baking pan or line it with parchment paper. Pour the batter into the pan.

In a small bowl, mix brown sugar with a pinch of cinnamon and sprinkle over the batter.

Bake for 25-30 minutes, checking doneness with a toothpick.

Remove from oven and let cool for about 10 minutes before transferring to a wire rack.