Preheat oven to 350 degrees F. Place a rack in the center of the oven. Line a muffin tin with paper liners.

In a medium bowl, whisk together the flour, sugar, baking soda. In another medium bowl, whisk together canola oil, buttermilk, egg and vanilla extract along with the lemon juice and zest.

Add the wet ingredients to the dry ingredients all at once. Whisk together until just combined.

Stir in the poppy seeds. Pour the batter into the prepared muffin tins and bake for about 15 minutes, or until a toothpick inserted into the center comes out clean.

Cool on a rack, and if you like you can sprinkle with some confectioner’s sugar.