Nut and Seed Shortbread Cookies (Slice & Bake)
These nut and seed shortbread cookies are buttery, crumbly, and absolutely packed with walnuts, hazelnuts, and sunflower seeds in every single slice. You mix a rich shortbread dough, roll it into logs, and slice off rounds, which makes them a true slice-and-bake cookie you can prep ahead and bake whenever you want. With four kids in the house, a jar of these on the counter empties itself by the end of the week. You get a crisp, nutty, not-too-sweet cookie that keeps beautifully and tastes like it came from a bakery.
Why You’ll Love These Nut and Seed Shortbread Cookies
- Loaded with real nuts and seeds. Walnuts, hazelnuts, and sunflower seeds in every bite, not just a sprinkle on top.
- Slice and bake convenience. Roll the dough into logs, chill, and slice off as many as you want, whenever you want.
- Not too sweet. Buttery and nutty rather than sugary, which is why they disappear so fast in my house.
- They keep for weeks. Stored in a jar, they stay crisp and snackable far longer than soft cookies.
Ingredient Notes
Simple ingredients, but a few choices really shape the result. Here is what matters.
| Ingredient | What to know |
|---|---|
| Butter | Use good-quality butter, softened but not melted. It is the backbone of any shortbread, giving that rich, crumbly, melt-in-your-mouth texture. |
| Walnuts and hazelnuts | Toast them lightly first for deeper flavor. Chop roughly so you get big, satisfying pieces in each slice rather than dust. |
| Sunflower seeds | They add a subtle crunch and a nutty note without overpowering. Unsalted work best so you control the seasoning. |
| Flour | Add it gradually. Different flours absorb differently, so stop when the dough just comes together; too much makes them dry and hard. |
| Vanilla sugar | It adds a gentle warmth. If you cannot find it, use regular sugar plus a splash of vanilla extract instead. |
How to Make Nut and Seed Shortbread Cookies – Step by Step
Cream the butter and sugar. Beat the cubed butter, salt, vanilla sugar, and sugar until smooth and well creamed (see photo). This step builds the tender, crumbly base, so make sure there are no lumps of butter left.
Add the eggs. Crack in the eggs one at a time, mixing well after each (see photo). Adding them one by one keeps the dough from splitting and helps everything emulsify smoothly.
Fold in the nuts and seeds. Add the walnuts, hazelnuts, and sunflower seeds and mix until evenly distributed (see photo). You want them spread throughout so every slice is loaded, not clumped in one spot.
Work in the flour. Add the baking powder, then add the flour gradually and knead gently just until the dough comes together (see photo). Stop as soon as it holds; overworking or overflouring makes the cookies tough.
Shape and freeze the logs. Roll the dough into cylindrical logs and wrap them, then freeze until firm (see photo). Freezing is not optional here; a firm, frozen log is what lets you slice clean, even rounds instead of squashing the dough.
Slice and bake. Once the logs are firm, slice them into equal pieces and arrange on a parchment-lined baking sheet (see photo). Bake at 320F (160C) until golden, about 16 minutes, then let cool and store in an airtight jar.
My Top Tips for Nut and Seed Shortbread Cookies
- Freeze the logs until firm before slicing. This is the key step; frozen dough slices into neat, clean rounds instead of crumbling.
- Toast the nuts first. A few minutes in a dry pan deepens their flavor and makes the whole cookie taste richer.
- Do not overbake. Pull them when the edges are golden; they crisp up more as they cool.
- Add flour gradually. The exact amount depends on your flour, so stop when the dough just holds together.
- These are the cookies my kids grab for school and my husband takes to work with a cup of coffee or tea.
Freeze the dough logs until firm before slicing. A frozen log gives you clean, even rounds that hold their shape, while soft dough squashes and crumbles under the knife.
Common Problems and Fixes
Why is my shortbread dough crumbly and falling apart?
Too much flour or not enough mixing. Add flour gradually and stop as soon as the dough holds together when pressed. If it is already dry, work in a teaspoon of softened butter to bring it back.
Why did my cookies spread and lose their shape?
The dough was too warm when it went in the oven. Freeze the logs until firm, and bake the slices cold for cookies that hold their round shape.
Why are my cookies hard instead of crumbly?
Usually too much flour or overbaking. Measure carefully, add flour gradually, and pull the cookies as soon as the edges turn golden for that tender shortbread bite.
Storage and Make-Ahead for Nut and Seed Shortbread Cookies
Stored in an airtight jar at room temperature, these cookies stay crisp for up to 2 weeks. The dough logs are the real make-ahead hero: wrap them tightly and refrigerate for up to 3 days, or freeze for up to 2 months, then slice and bake straight from chilled whenever you want fresh cookies. Just add a couple of minutes to the bake time if baking from frozen.
FAQ
What are slice and bake cookies?
They are cookies made from a dough that is rolled into logs, chilled, and sliced into rounds before baking. It is a convenient method because you can keep the logs in the fridge or freezer and bake fresh cookies whenever you like.
Can I use different nuts in these shortbread cookies?
Absolutely. Almonds, pecans, or pistachios all work beautifully in place of or alongside the walnuts and hazelnuts. Just keep the total amount similar so the dough stays balanced.
Do I have to freeze the dough?
Freezing the logs until firm is the key to clean slices and cookies that hold their shape. It firms the butter so the knife cuts through neatly instead of dragging. If you are short on time, at least chill them well, but freezing works best.
How do I keep these cookies crunchy?
Store them completely cooled in an airtight jar. Any warmth or moisture trapped inside will soften them, so let them cool fully before sealing, and keep the lid tight between servings.
Nutrition information is not included for this recipe. Values vary depending on the exact ingredients and quantities you use.
These nut and seed shortbread cookies never make it more than a few days in my house, four kids and a full cookie jar is a losing battle. If you love a good cookie, try my chocolate walnut cookies next. Want to see how they come together? Watch my step-by-step video and subscribe for more real-food recipes.
Nut and Seed Shortbread Cookies
Ingredients
Method
- Cream the cubed butter, salt, vanilla sugar, and sugar until smooth and well combined.
- Add the eggs one at a time, mixing well after each.
- Add the walnuts, hazelnuts, and sunflower seeds and mix until evenly distributed.
- Add the baking powder, then gradually add the flour and knead gently until the dough just comes together.
- Roll the dough into cylindrical logs, wrap them, and freeze until firm so they slice easily.
- Remove the logs, slice into equal pieces, arrange on a parchment-lined baking sheet, and bake at 320F (160C) until golden, about 16 minutes. Let cool and store in an airtight jar.
Notes
Freeze the dough logs until firm before slicing for clean, even rounds.
Toast the nuts lightly first for deeper flavor.
Store fully cooled in an airtight jar to keep them crisp for up to 2 weeks.
