Blackberry Lavender Naked Cake with White Chocolate Buttercream

Ingredients

• 1 teaspoon kosher salt
• 2 cups granulated sugar
• 1-2 teaspoons dried lavender
• 3 sticks salted butter, at room temperature
• 1 1/2 cups powdered sugar
• 1 tablespoon lemon juice
• 8 ounces white chocolate, melted and cooled
• 3 large eggs
• 1 teaspoon baking soda
• 6 cups fresh or frozen blackberries
• 3 3/4 cups all purpose flour
• 1 tablespoon vanilla extract
• 1 1/2 cups buttermilk
• 1 teaspoon baking powder
• 1/2 cup plain greek yogurt
• 1/2 cup honey
• 1 cup canola oil