Preheat oven to 350F and grease an 8x8 baking dish.
In a medium bowl, mix together flour, baking soda, pumpkin pie spice, and salt.
In a large bowl, whisk together three eggs, pumpkin, coconut oil. maple syrup, and vanilla.
Add wet ingredients to try and mix together.
Stir in chocolate chips. Pour into baking dish and bake for 35-40 minutes or until toothpick inserted comes out clean. Let cool.
While baking, use a hand mixer to beat together frosting ingredients until smooth. Once cake has cooled completely, frost.