Mix oat flakes, chiaseeds and linseeds in a bowl. Add half of the milkshake and stir, leave to swell for a few minutes, add the rest of the liquid. Refrigerate for at least 1 hour, ideally overnight.
Chop the strawberries into smaller pieces, place them in a bowl, mix with agave syrup, grated limezest, vanilla powder and chopped basil. Mix until the strawberries become juicy. Top your oats with the marinated strawberries.