I have not personally made this cake but
have eaten it. It’s great!
The lady that baked it used a flat pan to bake it in.
Can’t remember the size.

OATMEAL CAKE & TOPPING

1 cup 3-minute Oatmeal
1 1/2 cups Boiling Water
1/2 cup Butter or Margarine
1 cup firmly packed Brown Sugar
1 cup White Sugar
2 Eggs
1 1/3 cups Flour
1 teaspoon Cinnamon
1 teaspoon Soda
1/2 teaspoon Salt
1/2 teaspoon Nutmeg
1 Teaspoon Vanilla

Pour boiling water over oatmeal and set aside.
Cream butter and sugars until fluffy.
Add eggs one at a time, beating well.
Add oatmeal-water mixture.
Sift dry ingredients together and add, beating well.
Bake in well greased and floured loaf or tube pan
at 350° for 30 to 35 minutes.

TOPPING
1 stick (1/2 cup) Butter or Margarine
1/2 cup Brown Sugar
1/2 cup Milk, Cream or Evaporated Milk
1 cup Coconut
1/2 cup Chopped Nuts

Melt butter, add sugar and milk, bring to boil.
Cook slightly.
Add nuts and coconut.
Pour on top of hot cake and place under broiler
until topping is bubbly.

Serves 12