Preheat the oven to 180°C conventional or 165–170°C fan-assisted. Line a 20 × 15 cm baking dish with parchment.
Blend the rolled oats until they form a fine oat flour.
Wash and thoroughly dry the strawberries. Dice most of them and reserve a few slices for topping.
Mash the bananas in a large bowl until smooth.
Stir in the melted coconut oil, vanilla, agave syrup, and salt.
Add the oat flour and mix until no dry patches remain.
Let the mixture rest for 5 minutes so the oats can absorb the moisture.
Gently fold in the diced strawberries.
Transfer the mixture to the prepared dish and spread it into an even layer.
Top with the reserved strawberry slices and slivered almonds. Press them lightly into the surface.
Bake for approximately 40 minutes, until the edges are golden and the centre is set.
Cool in the dish for 20 minutes, then lift out using the parchment and cool completely before slicing into 8 bars.