Creating your own Pumpkin Crumb Cake Muffins is as easy as following these detailed steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners or grease them.

2. Mix the Dry Ingredients: In a large mixing bowl, whisk together the flour, baking powder, baking soda, cinnamon, nutmeg, ginger, and salt.

3. Mix the Sugars: In another bowl, combine the granulated sugar and brown sugar, mixing well.

4. Combine Wet Ingredients: Add the pumpkin puree, vegetable oil, eggs, and vanilla extract to the sugar mixture. Whisk until everything is well combined and smooth.

5. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, gently folding until just combined. Be careful not to overmix.

6. Prepare the Crumb Topping: In a separate bowl, mix together the flour, oats, brown sugar, melted butter, and cinnamon. Use a fork to combine until crumbly.

7. Fill Muffin Tin: Spoon the muffin batter into the prepared muffin tin, filling each cup about ¾ full.

8. Add Crumb Topping: Generously sprinkle the crumb topping over each muffin.

9. Bake: Place in the preheated oven and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.

10. Cool: Remove from the oven and allow the muffins to cool in the pan for 10-15 minutes. Then transfer them to a wire rack to cool completely.

Follow these simple steps, and you’ll have a batch of Pumpkin Crumb Cake Muffins that tastes incredible and looks fabulous!