These sugar-free Nutter Butter cookies bring together crisp-tender peanut butter cookies and a thick, creamy peanut butter filling. Each sandwich has the familiar oval shape and fork-marked top, but the dough uses almond flour, whey protein isolate, and allulose instead of regular flour and sugar.
The cookies are large enough to feel like a proper dessert, yet each filled sandwich has about 3 grams of net carbs. The dough needs only a short chill, and the cream cheese filling comes together while the baked cookies cool.
Why You’ll Love These Sugar-Free Nutter Butter Cookies
The peanut butter flavor runs through both parts of the cookie. The baked shells have golden edges and a gently crisp surface, while the center stays tender. The filling is smooth, lightly tangy from the cream cheese, and thick enough to hold its shape when the sandwiches are pressed together.
The ingredient list is short and practical. There is no need to roll the dough or use a cookie cutter. Divide it into 16 pieces, shape each piece into an oval, and add the fork marks before baking.
If you are building a tray of sugar-free treats, add a few recipes from the Sugar-Free Cookies & Bars collection. For a chilled option with a completely different texture, try the Sugar-Free Tiramisu Mousse Cups.
For a chilled chocolate dessert instead, our Sugar-Free Raspberry Cheesecake Chocolate Bar sets in a segmented mold and cuts into eight portions.
What Gives the Cookies Their Texture
Almond flour provides the main structure and keeps the cookies tender. Whey protein isolate helps the dough bake into a firmer shell, which matters because the cookies need to support a generous layer of filling. Baking powder gives them a little lift without making them cakey.
The egg and egg white bind the dough and help the edges brown. Softened butter adds richness, while the no-added-sugar peanut butter supplies flavor and moisture. Because peanut butter consistency can vary, mix until the dough looks evenly combined before chilling it.
Twenty minutes in the refrigerator makes the soft dough easier to divide and shape. Do not skip that rest. Warm dough can spread too quickly and lose the oval shape in the oven.
How to Shape the Oval Peanut Butter Cookies
Divide the chilled dough into 16 equal pieces. Roll and press each portion into an oval that measures about 2 1/2 to 3 inches long and roughly 1/4 inch thick. Keeping the pieces close in size helps them bake evenly and makes pairing the sandwiches easier.
Press the fork marks lightly across the tops. The goal is to create the familiar ridged pattern without flattening the cookies too much. If the fork begins to stick, wipe it clean before moving to the next piece.
Arrange the cookies on a parchment-lined 13 x 18-inch metal baking sheet with a little room between them. Bake at 325°F for 10 to 12 minutes. Look for golden edges and set centers. They will continue to firm as they cool, so leaving them in the oven too long can make the finished sandwiches dry.
Making the Creamy Peanut Butter Filling
While the cookies cool, powder the remaining 23 grams of allulose. A finer texture helps it blend into the cream cheese without leaving a grainy filling. Beat the powdered allulose with the softened cream cheese and the remaining 2 tablespoons of peanut butter until the mixture looks thick and smooth.
Wait until the cookies are completely cool before piping. Even a little warmth can soften the filling and make it slide toward the edges.
Pipe the filling generously onto the flat sides of eight cookies. Match each one with a similar-sized top, then press gently until the filling reaches close to the edge. A light touch keeps the tender cookies from cracking.
Why the Final Chill Matters
Once assembled, chill the sandwich cookies for 20 minutes. This short rest firms the cream cheese filling and helps the two cookies stay together when lifted or bitten.
The finished texture is best described as crisp-tender rather than crunchy. The outer cookies hold their shape, but they still break easily around the creamy center. If you prefer a softer sandwich, let one sit at room temperature briefly before serving.
Serving and Storage
Serve the cookies cool so the filling stays thick. They work well as a make-ahead dessert because both the shells and filling benefit from time to settle.
Keep the assembled cookies in a covered container in the refrigerator. Place parchment between layers if you need to stack them. The filling contains cream cheese, so the sandwiches should not be stored for long periods at room temperature.
For another creamy dessert made for the refrigerator, the Sugar-Free Lemon Cream Cheesecake is bright and smooth, with a buttery almond crust.
Sugar-Free Nutter Butter Cookies
Ingredients
Equipment
Method
- Heat oven to 325°F. Line baking sheet.
- Mix almond flour, whey, baking powder, and 30g allulose.
- Add 1/4 cup peanut butter, butter, egg, and egg white; mix into a soft dough. Chill 20 minutes.
- Divide into 16 pieces. Shape into 2 1/2 to 3-inch ovals about 1/4 inch thick and press fork marks lightly across tops.
- Bake 10 to 12 minutes until edges are golden and centers are set. Cool completely.
- Powder remaining 23g allulose. Beat with cream cheese and remaining 2 tbsp peanut butter until thick and creamy.
- Pipe filling generously over 8 cookies. Top with remaining cookies and press gently.
- Chill 20 minutes before serving.
Notes
Do not overbake; centers firm as they cool.
Cool completely before filling.
Use creamy peanut butter with no added sugar.
Frequently Asked Questions
Can I use natural peanut butter?
Use a creamy peanut butter with no added sugar. If the oil has separated, stir it very thoroughly before measuring. A very runny peanut butter can make both the dough and filling softer than intended.
Why did my cookies spread?
The dough may have been too warm. Chill it for the full 20 minutes, and shape the cookies just before they go into the oven. A warm baking sheet can also encourage spreading, so start with a cool pan.
Can I fill the cookies while they are warm?
No. Let them cool completely. Warm cookies can melt the cream cheese filling and make the sandwiches slide apart.
How do I keep the cookies from cracking when I assemble them?
Pipe the filling instead of spreading it with pressure, then place the top cookie over it and press gently. The 20-minute chill will firm the sandwich without requiring a hard press.
Final Tips for the Best Sandwich Cookies
Keep the cookies about 1/4 inch thick, bake only until the edges turn golden, and let them cool fully before filling. Powdering the remaining allulose makes the cream cheese mixture smoother. Once the sandwiches are assembled, give them the full final chill. Those simple steps produce neat cookies with tender shells and a generous peanut butter center.