Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large bowl, mix the all-purpose flour, granulated sugar, baking powder, and a pinch of cardamom or cinnamon until well combined.

In a separate bowl, whisk together the egg, milk, melted butter, and vanilla extract until smooth and well-mixed.

Pour the wet mixture into the dry ingredients, stirring gently until just combined. Fold in the diced rhubarb.

Using a scoop, form mounds of batter on the baking sheet, spacing them a few inches apart.

Bake for 12 to 16 minutes until golden brown and a toothpick comes out mostly clean.

While the fritters are baking, mix powdered sugar with a splash of milk or lemon juice to create the glaze.

Once baked, brush the warm fritters with the glaze, allowing it to melt slightly into them.

Broil the glazed fritters for 30 to 90 seconds, watching closely to avoid burning, until a crackly top forms.