Preheat oven to 350 degrees. Line a loaf pan with parchment paper.
Combine dry ingredients including raisins in a large bowl and mix together.
Whisk together wet ingredients in a small bowl.
Pour wet ingredients into dry and mix with a spatula until combined.
Transfer batter to the loaf pan spreading evenly and into the corners with a spatula.
Bake for 25-30 minutes.
Remove from oven, lift the parchment paper out of the loaf pan and place the bread (with the parchment still on it) on a cooling rack.
Slice once cooled for at least 10 minutes.
Notes
*If you wanted to make this paleo, I believe substituting more almond flour for the spelt would work although I haven't tried it. Depending on how strict you are on paleo, the butter could also be subbed for melted coconut oil. The bread probably won't rise as much without the spelt flour though.