Oatmeal cake

Preheat oven to 350 degrees F. Prepare a 13x9 inch pan by greasing or buttering, then lightly dusting with flour.
In a medium sized bowl combine oats and boiling water. Let stand for 20 minutes.
In a large bowl, using an electric mixer, beat together sugar, brown sugar and butter on medium until light and fluffy, scraping the bowl as needed. This make take a few minutes to fully combine the butter and sugars.
Add in vanilla and eggs, and beat to combine. Add in oat mixture and remaining cake ingredients and beat until combined. Spread evenly into prepared pan.
Bake for 35 to 45 minutes or until a toothpick inserted into the center of the cake comes out clean.

While cake is baking, beat together 2/3 cup brown sugar, 1/4 cup melted butter and 3 tablespoons of half and half. Combine until smooth. Stir in coconut and nuts.
When cake is done remove from the oven, and set the now empty oven to broil. Carefully spoon the frosting over the hot cake.
Return the frosted cake to oven and broil for 1 to 2 minutes or until the frosting is bubbly and light golden brown. Remove from oven, and cool on a wire cooling rack for at least one hour prior to serving.