Step 1: Preheat your oven to 350°F (175°C) and grease a 9x5 inch loaf pan, or line it with parchment paper for easy removal.
Step 2: In a medium bowl, whisk together the flour, baking powder, baking soda, cinnamon, ginger, nutmeg, and salt.
Step 3: In a large bowl, beat the eggs with the brown sugar and granulated sugar until well combined. Gradually whisk in the oil and vanilla extract.
Step 4: Fold in the grated carrots and chopped dates into the wet mixture until evenly distributed.
Step 5: Gently fold the dry ingredients into the wet ingredients using a spatula, being careful not to over-mix. Fold in the walnuts if using.
Step 6: Pour the batter into the prepared loaf pan and smooth the top. Bake for 55-60 minutes, or until a toothpick comes out clean.
Step 7: While the loaf cools, prepare the maple cream by beating the cream cheese, butter, maple syrup, and powdered sugar until smooth and fluffy.
Step 8: Once the spiced carrot date loaf is completely cool, spread the maple cream over the top and serve.