Follow these easy steps to create your Pumpkin Crisp Baked Dessert:

1. Preheat Oven: Begin by preheating your oven to 350°F (175°C). Prepare a 9×13 inch baking dish by lightly greasing it with cooking spray or butter.
2. Mix Pumpkin Filling: In a large bowl, combine the pumpkin puree, granulated sugar, ground cinnamon, nutmeg, ginger, cloves, and eggs. Whisk these together until well blended.
3. Add Evaporated Milk: Gradually stir in the evaporated milk until the mixture is smooth and even.
4. Combine Dry Ingredients: In another bowl, whisk together the flour, baking powder, and salt.
5. Incorporate the Flour Mixture: Slowly add the dry ingredients to the pumpkin mixture, stirring until fully combined.
6. Prepare the Topping: In a separate bowl, mix oats, brown sugar, melted butter, and nuts (if using) until crumbly.
7. Pour Pumpkin Mixture: Pour the pumpkin filling into the greased baking dish, spreading it evenly.
8. Add Topping: Evenly sprinkle the oat mixture over the pumpkin filling.
9. Bake: Place the baking dish in the preheated oven and bake for 45-50 minutes or until a knife inserted in the center comes out clean.
10. Cool: Once baked, remove the dish from the oven and allow the dessert to cool for about 10-15 minutes before serving.

Your Pumpkin Crisp Baked Dessert is now ready to be enjoyed!