Mix together butter and brown sugar then mix in flour and the oats to make an oatmeal crumble crust to press inside a 9×13 inch baking dish.
Bake it in the oven at 350 for 15 minutes.
While the crust is baking, prepare the filling ingredients
In a large bowl, beat eggs and mix in white sugar.Beat in pumpkin and evaporated milk (I use our own fresh milk.).Mix in salt, cinnamon, ginger and cloves.
When crust is finished baking, pour over hot crust
.Now mix crumb ingredients, and sprinkle over filling
.Return to the oven and bake an additional 20 minutes, until set.Let cool before cutting into squares.If desired, serve with a dab of whipped topping on each piece.