Preheat & Prep – Heat oven to 350°F (175°C) and grease a bunny donut pan.
Mix Dry Ingredients – In a bowl, combine flour, sugar, baking powder, baking soda, salt, poppy seeds, and lemon zest.
Combine Wet Ingredients – Whisk lemon juice, buttermilk, egg, melted butter, and vanilla extract in a separate bowl.
Make Batter – Stir wet ingredients into dry ingredients until just combined.
Bake – Pipe or spoon batter into molds, bake for 10–12 minutes. Cool completely.
Prepare Glaze – Whisk together powdered sugar, lemon juice, vanilla, and milk.
Decorate – Dip donuts in glaze, sprinkle with poppy seeds, and add bunny decorations.
Serve & Enjoy!