Blueberry Muffins

Ingredients (9)

• 1/2 cup unsalted butter (1 stick) melted and cooled
• 1 1/4 cups sugar
• 1/4 tsp salt
• 2 large eggs at room temperature
• 1 tsp vanilla extract
• 2 ⅓ cup all-purpose flour
• 2 tsp baking powder
• 1 cup blueberries
• 1/2 cup buttermilk