Small Batch Apple Pumpkin Streusel Muffins with Crispy Topping

Ingredients

• 3 tablespoons all-purpose flour
• 1 ½ tablespoons unsalted butter, cold and cut into cubes
• 1 ½ tablespoons light brown sugar
• 2 teaspoons granulated sugar
• Pinch of salt
• ¼ teaspoon ground cinnamon or pumpkin pie spice
• 1 ½ tablespoons diced apples, optional
• 1 ½ tablespoons full fat sour cream, room temperature
• 5 tablespoons pure canned pumpkin
• 1 tablespoon apple juice, orange juice, or water
• 3 tablespoons granulated sugar
• 2 tablespoons light brown sugar
• 1 large egg yolk, room temperature
• ½ teaspoon vanilla extract
• ½ cup fresh apple, cut into small cubes
• ½ cup, plus 1 tablespoon all-purpose flour
• ¼ teaspoon baking soda
• ⅛ teaspoon salt
• ¾ teaspoon pumpkin pie spice