apple walnut cake

I would enter this cake into a contest. It's perfect. It's fluffy, it holds together, it's not too sweet, it's totally healthy - even for someone who is staying away from eggs, dairy, gluten, and processed sugar. And I have my boyfriend to thank.. because it was he who created the recipe. It's the second time we've made it now - and we've got all the kinks worked out, so you won't be mad at me when you try to make it at home. ;)
Oven! 350. And grease a 9x13 baking dish with coconut oil.

3/4 cup coconut oil, melted
a scant 1/2 cup honey..(totally change-able based on desired sweet level. We enjoy a level 5 in these parts) (vegans.. you know what to do)
2 tbsp ground flax seed with 6 tbsp warm water
2 tbsp vanilla extract
1 1/4 cup brown rice flour
1/4 cup buckwheat flour
1/2 tsp baking soda
1/2 tsp salt
1/2 cup walnuts, chopped
2 apples, finely diced (we use fuji)

In a big bowl mix the flours, salt, and baking soda. In another biggish bowl mix the melted coconut oil, vanilla, honey, and flax seed goo. (I usually wait a few minutes for the flax/water mixture to congeal, then I pour out the leftover water.. it probably doesn't make a difference.. but it's what I do.) Then pour the wet ingredients into the dry ones and mix it 200 times around with a fork. Lastly, fold in the chopped walnuts and apples.
Pour the batter into the greased dish and bake in a preheated oven for about 30 mintues. LET IT COOL. Then enjoy :)