Prepare the Crust:
In a food processor, combine the rolled oats, raw almonds, shredded coconut, and a pinch of salt. Blend until you achieve a rough flour consistency.
Add coconut oil and maple syrup, blending for about a minute until well combined. It should stick together easily when pressed between your fingers. If it’s not sticky enough, add cold water, one tablespoon at a time, while blending.
Transfer the mixture into a 20cm tart pan with a removable bottom, pressing it firmly to form an even crust.
Preheat your oven to 180°C (356°F) and bake the crust for 12 minutes. Let it cool completely.
Make the Filling:
In a blender, combine coconut milk, lime juice, maple syrup, matcha powder, corn starch, and agar agar. Blend until well combined.
Pour the mixture into a saucepan and gently heat over medium heat until it comes to a simmer, whisking continuously. Cook for about 1 minute, then remove from heat.
Allow the filling to cool slightly before pouring it into the cooled crust.
Cover and chill in the refrigerator for at least 4 hours or overnight for the best results.
Serve:
Once set, garnish the tart with toasted coconut or fresh lime zest for an extra punch of flavor and visual delight.