Step 1

Preheat the oven to 325 degrees F. Spray a 13x9-inch baking pan with nonstick spray.

Step 2

In a large bowl, combine the melted butter, brown sugar, granulated sugar, eggs, milk, apple butter and vanilla. Mix well with an electric mixer on medium speed and set aside.

Step 3

In another bowl, add the flour, baking powder, baking soda, salt, cinnamon and nutmeg. Whisk well.

Step 4

Add the dry ingredients to the liquid ingredients and mix with an electric mixer on medium speed until well combined. Be careful not to mix for too long. Don't mix over about 40 seconds. Scrape down the sides of the bowl, then mix again for only about 10-15 seconds more.

Step 5

Pour the batter into the prepared pan and bake at 325 degrees F for approximately 40-45 minutes. The cake will bake somewhat flat on the top. The cake is done when a toothpick inserted into the center comes out with either a few moist crumbs on it or clean, but no raw batter.

Step 6

Remove the baked cake from the oven and set on a cooling rack to cool completely before adding the frosting.

Step 7

In a bowl, add the room-temperature butter and cream cheese and mix well with an electric mixer on medium to medium-high until smooth.

Step 8

Add in the salt, cinnamon, vanilla, confectioners sugar and milk. Mix on medium until well combined.

Step 9

Check the consistency. If it’s too thick, add a teaspoon of milk and mix again.

Step 10

Add to cooled cake.