- 2 teaspoons dried edible lavender (see note 1)
- 3/4 cup (177ml) milk of your choice
- 1 2/3 cups (207g) cake flour (see note 2)
- 1/2 teaspoon baking powder
- 1/4 teaspoon baking soda
- 1/2 teaspoon salt
- 1/2 cup (1 stick; 113g) unsalted butter at room temperature
- 1 cup (200g) granulated sugar
- 2 large egg whites, at room temperature
- 1/4 cup (60g) Greek yogurt or sour cream, at room temperature
- 2 teaspoons vanilla extract
- 1/8 teaspoon lavender extract (optional)
- 1/2 vanilla bean, split and seeds scraped out
For the Honey Buttercream Frosting:
- 1 cup (2 sticks; 227g) unsalted butter, at room temperature
- 3-4 cups (360-480g) powdered sugar
- 1/4 cup (59ml) heavy cream
- 3 tablespoons (63g) honey
- 1 teaspoon lemon zest
- Pinch of salt, to taste
- Very small drop of purple gel food color (optional)