Step 1

Preheat the oven to 350 degrees F. Line an 8×8-inch square baking dish with parchment paper, leaving some of the paper hanging over the edges.

Step 2

In a large bowl, add vegan butter, brown sugar, and sugar. Using a stand mixer or electric handheld mixer, cream together until light and fluffy (about 1-2 minutes). Add non-dairy milk and vanilla extract. Cream together once more to combine.

Step 3

Add all-purpose flour, cornstarch, baking powder, salt, and cinnamon. Fold together just until the flour is incorporated.

Step 4

Transfer blondie dough to the baking dish. Using clean hands or a silicone spatula, press it against the bottom of the dish.

Step 5

In a small bowl, add granulated sugar and cinnamon. Mix together. Sprinkle the cinnamon sugar on top of the blondie dough.

Step 6

Bake blondies for 30 minutes. Use the toothpick test to determine doneness. Remove from the oven and set aside to cool completely.

Step 7

Once the blondies have cooled, prepare the vanilla icing. In a bowl, add powdered sugar, vegan butter, non-dairy milk, vanilla, and salt. Whisk together until evenly smooth. Drizzle icing on top of the blondies. Gently slice into 16 bars. Enjoy!