A nourishing snack that actually keeps you full, this Protein Peanut Butter Slice ticks all the boxes. It’s no-bake, made with everyday pantry ingredients, and packed with protein and healthy fats — perfect for busy days, lunchboxes, or an afternoon pick-me-up.
The base combines oats and almond meal for slow-release energy, while protein powder and peanut butter add staying power to keep hunger at bay. The texture is soft yet firm enough to slice cleanly once chilled.
What really makes this protein slice shine is the topping. A generous layer of peanut butter adds richness, followed by melted dark chocolate and a sprinkle of salt. That sweet-salty finish turns a simple snack into something that feels a little indulgent — without straying from wholesome ingredients.
This protein peanut butter slice is ideal for meal prep too. Make it once and you’ll have a fridge-ready snack for the week, whether you’re packing school lunches, heading out for the day, or just want something nourishing on hand when cravings hit.
Because it’s no-bake and easily adaptable, you can also tweak it to suit your needs — switch up the peanut butter, adjust the sweetness, or choose milk or water depending on what you have available. It’s a flexible recipe that fits seamlessly into real life.
If you’re after an easy, protein-rich snack that tastes as good as it looks, this one’s a keeper.
Steps for the recipe
Everything starts with the base — a simple mix of oats, almond meal and vanilla protein powder. These dry ingredients form the foundation of the slice, giving it structure while keeping it filling and nourishing.
Once the dry ingredients are combined, peanut butter and a small amount of milk or water are added. As everything is mixed together, the base transforms into a thick, slightly sticky mixture that presses easily into a lined tin. Taking a moment to really compact the base helps ensure clean slices later on.
Next comes the layers that make this slice extra satisfying. A smooth layer of peanut butter is spread over the base, adding richness and that classic nutty flavour. Melted dark chocolate is then poured over the top, creating a glossy finish that sets beautifully once chilled.
To finish, a light sprinkle of salt is added over the chocolate. This small step makes a big difference, balancing the sweetness and bringing all the flavours together.
The Peanut butter I used for the base was Dope Nutz Salted Caramel Peanut Butter and then for the peanut butter you spread over the base I used a natural peanut butter so it’s not too sweet. Other options you could use is almond butter.
After a short stint in the fridge, the slice firms up and is ready to cut into portions.
Protein Peanut Butter Slice
Course: DessertDifficulty: Easy4
servings10
minutesIngredients
BASE
100g rolled oats
100g almond meal
1 scoop vanilla protein powder
5 1/2 tablespoons peanut butter (of choice)
3 tablespoons milk or water
TOPPING
Peanut butter – for spreading
Dark Chocolate, melted
Salt for toppping
Directions
- Line a slice tin with baking paper.
In a bowl, add oats, almond meal and vanilla protein powder and mix to combine. - Add peanut butter and milk (or water) and mix until a thick slightly sticky dough forms. Use your fingers to combine it if easier.
- Press the mixture firmly into the prepared tin, smoothing the surface.
Spread a layer of peanut butter evenly over the base.
Pour over the melted dark chocolate and smooth gently. - Finish with a light sprinkle of sea salt.
Place in the fridge for 1–2 hours or until set.
Slice and enjoy straight from the fridge.
Notes
- Store in an airtight container in the fridge for up to 5 days.
- For the base – I used salted caramel peanut butter to add flavour and for the spreading I used natural peanut butter.
