Kind of like a mug cake, but baked.
Preheat oven to 350°F
Rub a little melted coconut oil or soft butter on the inside of your baking dish if you want to be able to remove your cake before eating it.
Melt butter in microwave or on stove
Add melted butter, pumkin puree, honey, vanilla, lemon juice, and egg to a small mixing bowl or a 2-cup glass measuring cup
Whisk to combine
Add almond flour, coconut flour, baking soda, and spices to mixture
Stir until well combined
Stir in raisins and walnuts if using
Pour batter into small baking dish - this could fit in a mug if you have one that is oven-safe
Bake for 15 - 20 minutes until toothpick inserted in middle or one of the thick sides of the bundt pan comes out clean
Cook in baking dish on wire rack for 10 -15 minutes
I like to remove from the baking dish, but you could leave it in there to eat if you like. If removing from mini-bundt pan - carefully run a butter knife around edge. Turn pan over and gently tap the bottom of the pan with the knife. The cake should easily pop out.
Note - if you want to do a microwave mug cake: Mix all ingredients in mug and microwave for 90 seconds to 2 minutes.