- Nutmeg Nanny - https://www.nutmegnanny.com -

Toaster Oven Cream Filled Oatmeal Cookies

Sharing is caring!

These toaster oven cream filled oatmeal cookies are just like the Little Debbie kind but even better because they are homemade. Plus they are made in the toaster oven!

When I was a kid and went to my Grandmother’s house there was always two things I was sure of.  When I lifted the cookie jar lid there would be cookies inside and if I went to the pantry there was bound to be some Little Debbie snacks. Both of those things delighted me and usually my visit would end in a sick stomach because I would try to eat as many sweets as I could.

While I was sitting on my couch last night I was thinking how I needed (ok wanted) something sweet. Cursing myself for not picking  up some Little Debbie oatmeal cream sandwiches when I was at the grocery store earlier in the day. Then I dawned on me that I don’t need to buy them when I can just make them! I looked through my list of saved recipes and found an oatmeal cookie recipe for the toaster oven (yes the oven is still broke. Getting it fixed on Monday!!!) and found a cream filling that would make a super oatmeal cream sandwich that would make little Miss Debbie herself jealous. The cookies turned out fantastic. They were chewy and crispy and had a hint of cinnamon which I think really brought a lot to the cookies. The filling was a mixture of powdered sugar, marshmallow cream and half and half.

One little tip about these cookies – do not use too much filling or your filling will ooze out of the cookie and make a huge mess. I know this because I made this mistake and I was licking sugary marshmallow cream off my fingers…not that that’s a bad thing but I’m not sure everyone would find it as fun as me.  I made the cookies last night and let them sit overnight and today they reminded me more of the sandwich cookies I was trying to mimic because the sitting time helped the cream set up and softened the cookie just a little.

Toaster Oven Oatmeal Cookies

These toaster oven cream filled oatmeal cookies are just like the Little Debbie kind but even better because they are homemade. Plus they are made in the toaster oven!

Prep Time: 15 minutes

Cook Time: 30 minutes

Total Time: 45 minutes


For cookies:

  • 2-3/4 cup old fashioned oats
  • 1 cup flour
  • 2 eggs
  • 1/2 teaspoon kosher salt
  • 1 cup unsalted butter
  • 1 teaspoon vanilla extract
  • 1 cup brown sugar
  • 1/3 cup white sugar
  • 1 teaspoon baking soda
  • 1 teaspoon ground cinnamon

For filling:

  • 3 cups powdered sugar
  • 3/4 cup shortening
  • 7 ounces marshmallow cream
  • 3 tablespoon half and half

Source: Cooks and Taste of Home


For Cookies:
Mix the salt, butter, vanilla, and brown sugar in a big bowl. Add white sugar, baking soda, eggs and ground cinnamon until fully mixed.

Stir in the flour, mixing thoroughly. Stir in the oats until you see no flour and the batter looks thick.

Drop by large rounded spoonfuls onto a ungreased cookie sheets (about six per batch).

Press the cookies down to make them flat before baking.

Bake in a preheated 350°F for about 15 Minutes or until brown at the top.

Toaster oven temperatures vary and the cookies will burn quickly if they are not watched. Check on cookies at the 10 minute mark.

Cooks Note: I had to add more oats to my batter because there was not enough in the original recipe. Make sure the batter is thick with oatmeal but there is enough batter to coat all the oatmeal.

For Filling:
With electric mixer blend together shortening, powdered sugar and marshmallow cream. Add enough milk to achieve spreading consistency.

After the cookies are completely cooled pipe or spread filling on one cookie and top with the another cookie.