Preheat oven to 350°F (175°C). Line a 9x5-inch loaf pan with parchment paper for easy removal, or very lightly grease the loaf pan.
Grind Einkorn wheat berries and measure out 2 1/4 cups of flour.
In a large bowl, whisk together flour, baking powder, baking soda, salt, cinnamon, and nutmeg.
To the dry ingredients, add the chopped dates and nuts. Toss well to completely coat them with the flour mixture.
In a separate bowl, whisk together the buttermilk, melted butter, maple syrup, eggs, and vanilla until well combined.
Pour the wet ingredients into the dry ingredients. Stir gently with a spatula or wooden spoon until just mixed. Do not overmix—fresh-milled Einkorn prefers a gentle touch.
Fold in the chopped dates and walnuts until evenly distributed.
Let the batter rest for 5–10 minutes to allow the Einkorn flour to fully absorb the liquid.
Pour the batter into the prepared loaf pan and smooth the top. Optional: Sprinkle a few extra chopped nuts or a pinch of raw sugar on top.
Bake for 50-60 minutes or until a toothpick inserted in the center comes out clean. Tent with foil after 40 minutes if the top is browning too quickly.
Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.