Preheat oven to 350° F and spray 9x9 baking pan with nonstick cooking spray.
In a medium-sized bowl, add flour, baking soda, baking powder, salt, cinnamon, nutmeg, and ginger and whisk to combine.
Add pumpkin puree, brown sugar, vegetable oil, and milk and mix until incorporated.
Pour batter into greased baking pan.
Crumb Topping
Add flour, brown sugar, and cinnamon in small bowl and whisk. Add butter and, using a fork or pastry cutter, cut butter into dry ingredients until it forms coarse crumbs.
Sprinkle crumb topping evenly over batter in baking pan.
Bake coffee cake at 350° F for 30-35 minutes or until toothpick inserted in center comes out clean.
Let cool for 10-15 minutes and serve immediately. Or cover and save for when you're ready!