Grease a twelve section mini cake pan or muffin pan.
For the cake:
Add all of the dry ingredients to a large mixing bowl. Mix in the pumpkin and eggs until combined. Mix in the oil and milk until smooth.
Add the batter evenly to the pan and set aside.
For the topping:
Add all of the ingredients to a food processor and pulse until combined.
Squeeze to form lumps and crumble over each cake.
Bake for 20 to 25 minutes, until a cake tester, comes out clean, and the tops are nicely browned.
Let cool in the pan for 5 minutes before transferring to a wire rack.
For the drizzle:
Mix all of the ingredients in a small mixing bowl until smooth.
Drizzle over cooled cakes.
Video
Notes
*Spices - Because Pumpkin spice is not available in stores worldwide, I use individual spices. If you have it and want to save time on measuring, you can replace the spices with 1½ teaspoons of pumpkin spice mix.Although I made mini cakes, this recipe can also be made as one larger cake by using a 9-inch pan and increasing the cooking time to 30 minutes.
If you find the top of the cakes are browning too quickly when baking, loosely cover them with aluminum foil.
Always make sure you grease your pan thoroughly, this ensures you can remove your muffins without them sticking.