Hairy Bikers Peanut Butter and Oat Cookies Recipe

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If you love a cookie with proper chew, deep peanut flavour, and a toasty oat bite, these Hairy Bikers-style peanut butter and oat cookies will hit the spot. They bake up with lightly crisp edges and a soft, almost fudgy centre, plus that classic peanut butter richness. The method is straightforward and forgiving, even if you do not bake often. From bowl to cooling rack, you are looking at around 35 to 40 minutes total.

Hairy Bikers Peanut Butter and Oat Cookies Recipe

Ingredients

For the peanut butter oat cookie dough

115g unsalted butter, softened
150g smooth peanut butter
100g light brown sugar
60g caster sugar
1 large egg
1 tsp vanilla extract
120g plain flour
1/2 tsp bicarbonate of soda
1/2 tsp baking powder
1/2 tsp fine salt
120g rolled oats

Optional add-ins (pick one)

100g chocolate chips (milk or dark)
60g chopped roasted peanuts
80g chopped chocolate bar pieces for puddles of melted chocolate

How to Make Hairy Bikers Peanut Butter and Oat Cookies Recipe

Oven preparation

Prepare the oven: Preheat the oven to 180°C (160°C fan). Line two large baking trays with baking parchment so the cookies lift off cleanly.
Position the shelves: Place a shelf in the middle of the oven. If you are baking both trays at once, use the upper and lower shelves and swap the trays halfway through.

Mixing the dough

Cream the fats and sugars: In a large bowl, beat the softened butter, peanut butter, brown sugar, and caster sugar until smooth and evenly combined.
Add the egg and vanilla: Beat in the egg and vanilla extract until the mixture looks glossy and thick.
Add the dry ingredients: Sprinkle in the flour, bicarbonate of soda, baking powder, and salt. Mix just until you no longer see dry flour.
Fold in the oats: Stir in the rolled oats (and any optional add-ins) until evenly distributed. The dough should feel soft but scoopable.

Shaping

Portion the dough: Scoop or roll the dough into 20 balls, about 1 heaped tablespoon each. Space them well apart on the trays because they spread as they bake.
Flatten lightly: Press each ball down slightly with your palm. For the classic look, press a gentle crosshatch pattern with a fork.
Optional chill for thicker cookies: If your kitchen is warm or the dough feels very soft, chill the shaped cookies for 20 minutes before baking.

Baking

Bake: Bake for 10 to 12 minutes, until the edges are lightly golden and the centres look slightly underdone. That is exactly what you want for a chewy finish.
Rotate if needed: If baking two trays at once, swap shelves and rotate the trays halfway through for even colouring.

Cooling and finishing

Cool on the tray: Leave the cookies on the baking tray for 10 minutes. They are fragile straight from the oven and will firm up as they cool.
Transfer to a rack: Move the cookies to a wire rack and cool completely, or enjoy them slightly warm if you like a softer centre.

How to Make Hairy Bikers Peanut Butter and Oat Cookies Recipe

Tips

Why did my cookies spread too much?

This usually comes from butter that is too soft or a warm baking tray. Chill the dough for 20 to 30 minutes before baking, and always start with cool, lined trays. Also double-check your flour measurement, a light hand on flour can turn into very thin cookies.

How do I get a chewier centre?

Do not overbake. Pull them when the edges are set and lightly golden but the centre still looks a little soft. Cooling on the tray is part of the bake, so they finish setting without drying out.

Can I make them thicker?

Yes. Chill the dough, keep the cookie balls taller (do not flatten as much), and bake for the lower end of the time range. Thicker cookies also benefit from slightly larger portions, around 30g each.

Why do my cookies taste a bit bland?

Do not skip the salt. Peanut butter and oats both need it to taste their best. If you want more punch, add 1/2 tsp cinnamon or a tablespoon of dark treacle for deeper flavour.

Serving Suggestions

With a mug of strong tea or coffee
Sandwiched with a thin layer of jam for a peanut butter and jelly twist
Crumble over vanilla ice cream and drizzle with warm chocolate sauce
Pack into lunchboxes with apple slices

Storage

Room temperature

Store completely cooled cookies in an airtight tin for up to 4 days. If you like them softer, add a small piece of bread to the tin and replace it every day or two.

Refrigerator

You do not need to refrigerate baked cookies, but you can if your kitchen runs hot. Keep them airtight and bring to room temperature before eating for the best texture. They will keep for up to 7 days in the fridge.

Freezing

Freeze baked cookies in a freezer-safe container for up to 3 months. Defrost at room temperature for 1 to 2 hours. You can also freeze the unbaked dough balls on a tray until firm, then bag them up and bake from frozen, adding 1 to 2 minutes to the baking time.

Nutrition

Calories: 175 kcal (per cookie, based on 20)
Carbohydrates: 18 g
Protein: 4 g
Fat: 10 g
Saturated fat: 4 g
Sodium: 120 mg

Disclaimer: Nutrition values are estimates and can vary depending on brands, ingredient swaps, and portion size.

FAQs

Can I use crunchy peanut butter instead of smooth?

Yes. Crunchy peanut butter works beautifully and adds extra texture. The dough may feel slightly stiffer, so if it seems dry, add 1 tablespoon of milk and mix again.

Can I make peanut butter oat cookies without flour?

You can, but the texture changes. For a flour-free version, replace the flour with 60g more oats plus 30g ground almonds, and chill the dough before baking so the cookies hold their shape.

Are these cookies gluten-free?

They can be. Use a gluten-free plain flour blend and certified gluten-free oats. Everything else in the recipe is naturally gluten-free, but always check labels for cross-contamination.

Can I freeze the cookie dough for later?

Yes. Roll the dough into balls, freeze on a tray until solid, then store in a freezer bag for up to 3 months. Bake from frozen at the same temperature, adding 1 to 2 minutes.

Why are my cookies dry and crumbly?

Dry cookies are usually from overbaking or too much flour. Bake until the edges are just golden and the centres still look soft, and measure flour by spooning it into the measuring cup (or use scales for best accuracy).