Preheat Oven to 350°F.
Soak chopped raisins in 1 tbsp of spiced rum or water, set aside.
Beat eggs, buttermilk, oil and vanilla extract with a hand mixer or stand mixer on high for 30-45 seconds until foamy.
In a large bowl, whisk together flaxseed, sweetener, salt, baking powder and baking soda.
With a spatula, slowly stir in the buttermilk mixture to the flaxseed mixture until just incorporated. The mixture will be very fluffy. Allow to sit for 5 minutes.
Evenly distribute the soaked raisins to 12 muffin tins.
Pour the batter evenly into the muffin tins. Gently stir each muffin tin to distribute raisins throughout the batter.
Bake for 15-18 minutes until a toothpick inserted come out clean. Allow to cool.
Serve with a generous amount of butter, enjoy!