Can this be made in under 30 minutes?

Yes, the recipe is designed to be quick and efficient.

Does it work for meal prep?

Most versions store well for one to three days.

Yes, simple swaps can be made for convenience or dietary needs.

Scale

Cook Mode Prevent your screen from going dark

In a large mixing bowl, beat butter, sugar, salt, and vanilla until smooth and creamy. Add the egg yolk and mix until fully combined.
Gradually mix in flour until just incorporated. Do not overmix.
Turn the dough onto a lightly floured surface. Knead gently a few times until smooth. Shape into a log, wrap in plastic wrap, and refrigerate for at least 120 minutes.
Preheat oven to 325°F (160°C). Line baking sheets with parchment paper.
Slice chilled dough into ⅛-inch thick rounds. Place cookies about 1 inch apart on the prepared baking sheets.
Bake for 16–18 minutes, or until edges are just beginning to turn golden.
Let cookies cool on a wire rack before serving or storing.

For best results, start with room temperature butter. Store cooled cookies in an airtight container for up to one week.