Preheat oven to 350°
Prepare the flax egg and allow for it to sit for about 5 minutes.
In a large bowl, whisk together the vanilla extract, coconut milk, flax egg. Then add in the remaining ingredients EXCEPT the strawberries, rhubarb, and walnuts. Whisk again.
Then, add in the strawberries, rhubarb, and walnuts and mix them with a rubber spatula.
Using an ice cream scooper, add the batter into your muffin tins. Be sure to lightly grease the tins with coconut oil or use muffin paper.
Bake for about 30 minutes and allow for them to cool.
Serve and enjoy!