Back-to-School Berry Muffins

Ingredients

• 1/2 cup milk
• 2 eggs
• 1 1/4 cups sugar
• 1 teaspoon vanilla extract
• 1/2 cup softened butter
• 2 cups flour
• 1/2 teaspoon salt
• 2 teaspoon baking powder
• 1 1/2 cup blueberries
• 1/2 cup raspberries
• 1/2 cup granulated sugar
• 1/2 cup all-purpose flour
• 3 tablespoons salted butter (softened)