Zucchini Caramel Muffins

Bahan-bahan (16 porsi)

• 1/4 cup granulated sugar
• 1 tablespoon salted butter
• 1 -2 teaspoons lemon zest
• 1/2 teaspoon ground cinnamon
• flaky salt
• 2 medium zucchini, grated ((about 1 cup grated))
• 1/2 cup melted coconut oil
• 1/2 cup honey
• 2 large eggs
• 1/2 cup plain Greek yogurt
• 1/3 cup apple butter
• 2 teaspoons vanilla extract
• 2 cups whole wheat pastry flour ((or all-purpose flour))
• 2 teaspoons baking powder
• 1/2 teaspoon salt
• coarse sugar, for topping ((optional) )