Toasted Maple Blueberry Muffins With Maple Butter

Ingredients

• 1/4 cup softened unsalted butter, plus more for toasting
• 1/2 cup maple sugar, plus more for sprinkling
• 2 eggs
• 2 cups flour, plus more for coating blueberries
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 teaspoon cinnamon (optional)
• 1/2 cup milk
• 1/4 cup vegetable oil
• 1 tablespoon maple syrup
• 1 teaspoon vanilla extract
• 2 cups blueberries
• Maple Butter