Cinnamon Apple Pancakes with Pecan Streusel

Ingredients

• 1 1/2 cups all-purpose flour
• 2 tablespoons granulated sugar
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1 teaspoon ground cinnamon
• 1/4 teaspoon salt
• 1 1/4 cups buttermilk
• 1 large egg
• 3 tablespoons unsalted butter, melted
• 1 teaspoon vanilla extract
• 1 cup peeled apple, diced small (such as Honeycrisp or Gala)
• 1/4 cup all-purpose flour
• 3 tablespoons brown sugar, packed
• 1/2 teaspoon ground cinnamon
• 2 tablespoons unsalted butter, cold and cubed
• 1/3 cup pecans, chopped
• 2 tablespoons unsalted butter, for the griddle
• 1 maple syrup, for serving