Preheat the oven to 350 degrees Fahrenheit.
In a standing mixer, add pumpkin, oil, & brown sugar and mix until combined.
Next, add the eggs & almond milk and process until smooth.
Add the flour, baking powder, cinnamon, salt, & ground chia seeds and mix until batter is combined (but do not over mix).
Place muffin liners in a muffin pan & scoop the muffin batter evenly into each liner.
Next, in a bowl combine all the crumb topping ingredients & mix together.
Add an equal amount of crumb mixture to the top of each muffin.
Place the muffins into the oven & bake for 25 minutes.
Remove the muffins from the oven and allow them to cool slightly (about 10-15 minutes) before consuming. Store the leftover muffins in a container.