Preheat your oven to 350 degrees F. This step is important as it ensures that your cookies cook evenly. Greasing or lining two baking sheets with parchment paper will help prevent sticking and make cleanup a breeze.
In a large mixing bowl, beat together the unsalted butter, granulated sugar, dark brown sugar, and molasses using an electric mixer on medium speed until the mixture becomes light and fluffy, about 2 to 3 minutes. This process incorporates air into the butter, giving your cookies a delightful texture.
Add in the vanilla extract and beat until well combined. It’s amazing how just a teaspoon can elevate the flavor!
Next, crack in the eggs, one at a time, mixing well after each addition. This helps the eggs incorporate smoothly into the batter.
In a separate bowl, whisk together the all-purpose flour, baking powder, baking soda, ground cinnamon, and kosher salt. Gradually add this dry mixture to the wet ingredients, stirring just until combined. Be careful not to overmix; you want the dough to remain soft and tender.
Gently fold in the old-fashioned rolled oats using a spatula. You’ll want to ensure the oats are evenly distributed throughout the dough for that perfect chewy texture.
Using a cookie scoop or tablespoon, drop mounds of dough onto the prepared baking sheets, spacing them about 2 inches apart. This allows room for spreading while baking.
Bake the cookies in the preheated oven for 12 to 15 minutes, or until the edges turn lightly golden. Keep an eye on them—overbaking will lead to crunchy cookies!
Once baked, remove the cookies from the oven and allow them to cool on the baking sheets for about 10 minutes before transferring them to a wire rack to cool completely.
While the cookies are cooling, prepare the filling. In a mixing bowl, beat together the cream cheese, butter, powdered sugar, and vanilla until the mixture is light and fluffy. This creamy filling is what makes these pies so irresistible!
Once the cookies are completely cool, turn half of them flat-side up. Spread a generous layer of the filling on each, and then top with the other cookies, flat-side down to create a sandwich. Press gently to ensure the filling spreads to the edges.
Store your Homemade Oatmeal Creme Pies in the refrigerator for up to 4 days. Enjoy!