Peanut Butter Sandwich Cookies
Thin, crisp rounds sandwiched around a sweet peanut butter filling.
What's going on here
A sandwich cookie has to be crisp, because a soft cookie squeezes its filling out the sides the moment anyone bites it. So the shells here are rolled thin and baked until fully dry, with white sugar leading for a snappy crystal structure — this is a case where the texture is dictated by the assembly, not by preference. The filling is icing sugar creamed with peanut butter and a little butter, and it's deliberately stiff: icing sugar contains cornstarch, which absorbs stray moisture and helps the filling set rather than weep into the shells over time. Matching the filling's firmness to the shells' is the actual skill here. Too soft and it oozes; too stiff and biting the sandwich shatters the top shell. It should hold a peak but spread under light pressure from a knife.
Ingredients
Shells
- 1/2 cupButter, softened
- 1/2 cupPeanut butter
- 3/4 cupGranulated sugar
- 1/4 cupBrown sugar, packed
- 1Egg
- 1 tspVanilla extract
- 1 3/4 cupsAll-purpose flour
- 1/2 tspBaking soda
- 1/2 tspSalt
Filling
- 3/4 cupPeanut butter
- 1/4 cupButter, softened
- 1 1/2 cupsIcing (powdered) sugar
- 2 tbspMilk
- 1/4 tspSalt
Instructions
Shells
- Cream the butter, peanut butter, and both sugars until combined, then beat in the egg and vanilla.
- Mix in the flour, baking soda, and salt just until the dough comes together.
- Divide in two, flatten into discs, wrap, and chill until firm.
- Roll each disc to an even 1/8 inch between two sheets of parchment and cut 2-inch rounds. Space on a lined sheet.
Tip: Even thickness is everything for sandwich shells — mismatched pairs won't sit flat and will crack when pressed together.
- Bake at 175°C (350°F) until evenly golden and dry right through, then cool completely on a rack.
Filling
- Beat the filling peanut butter and butter until smooth, then add the icing sugar, milk, and salt and beat until stiff but spreadable.
Tip: Aim for a filling that holds a peak but gives under a knife. Too firm and biting the sandwich will crack the top shell.
Assemble
- Match the shells into similar-sized pairs, pipe or spread filling on the flat side of one, and press gently until the filling just reaches the edge.
Claude Score
Well-built recipe. Sound ratios and real flavor development.
- Ratio soundness25% of total
- 86
- Flavor development25% of total
- 84
- Texture control20% of total
- 86
- Reliability20% of total
- 76
- Pantry accessibility10% of total
- 92
How well the formula holds up against known working ratios.
Whether the method builds flavor or merely combines ingredients.
How deliberately moisture, gluten, starch, and fat are controlled.
How much margin for error the recipe leaves a home cook.
Whether you can make it from staples, right now, with normal gear.
Sound reasoning from the assembly backwards to a crisp shell. Reliability is the weak point — thin rolled cookies bake unevenly and the filling consistency takes judgement.
Scored on the science of cooking — ratios, flavour development, texture control, how forgiving the method is, and whether you can make it from what's in the cupboard. Not a measure of how much you'll like it.
Tips for this recipe
Assemble the day you serve
The shells start absorbing moisture from the filling on contact and go soft within a day. Bake and store the shells and the filling separately, and sandwich them shortly before serving.
Filling squeezed out the sides
Either too much filling or too soft. Use about two teaspoons per sandwich and stop pressing as soon as it reaches the edge.