Add ½ cup of the strawberry halves to a microwavable bowl. Microwave for 30 seconds, twice - give it a mix in between. Alternatively, you could heat gently over the stove. Remove and mash with a fork until a puree. Note: if using frozen strawberry halves you may need to heat for a bit longer!
Add to a jar or container the mashed strawberries, oats, yoghurt, milk, peanut butter, maple syrup and salt. Mix well.
Finely slice the remaining strawberries. Either mix into the overnight oats or place on top to garnish.
Cover and place in the fridge overnight to thicken up and let the flavours infuse.
Mix well in the morning. If it's too stiff you can add a splash of milk to loosen. Enjoy!