Heat oven to 375 degrees.
Cream butter, brown sugar and sugar on medium speed until light and creamy (about 2 minutes).
Add eggs, vanilla, and molasses until well combined.
In a medium sized bowl combine the flour, baking soda, baking powder, salt, cinnamon, cloves, nutmeg and oatmeal. Whisk these ingredients together well.
Slowly add the dry ingredients to the wet ingredients. The dough will be thick. I had to mix it by hand at the end.
Roll dough into 1 inch balls. Place on a baking sheet that has been lined with a baking mat or parchment paper.
Cook for about 10 minutes until cookies are golden around the edge.
Cool on cookie sheet for about 2 minutes then transfer to a wire cooling rack.
While the cookies are cooling make the frosting.
In a medium bowl beat butter for about 1 minute until creamy. Add powdered sugar, heavy cream, vanilla and salt. Beat on high until smooth and creamy.
Spread 1-2 Tablespoons of frosting on the flat side of the cookie, and then top with another cookie to make your oatmeal creme pie sandwich.