Golden Pumpkin Crumble Muffins

Preheat your oven to 180°C (350°F) and line a muffin tin with paper liners.
In a bowl, whisk together the flour, baking powder, salt, sugar, and brown sugar.
In a separate bowl, whisk the eggs, vegetable oil, vanilla extract, and pumpkin purée until smooth.
Gradually mix the wet ingredients into the dry ingredients until just combined. Do not overmix.
Fold in the chopped nuts if using.
Step 2: Make the Crumble Topping
In a small bowl, mix together the flour, oat flakes, brown sugar, and cinnamon.
Cut in the cold butter using a fork or your hands until the mixture forms coarse crumbs.
Step 3: Assemble and Bake
Fill each muffin cup ¾ full with batter.
Sprinkle the crumble topping generously over each muffin.
Bake for 20-25 minutes, or until a toothpick inserted in the center comes out clean.
Let the muffins cool in the pan for 5 minutes before transferring them to a wire rack.
Step 4: Drizzle the Glaze
In a small bowl, whisk together the powdered sugar, milk, and vanilla extract until smooth.
Drizzle the glaze over the cooled muffins and let it set.
Serving and Storage Tips