Preheat the oven to 350°F. Line an 8x8-inch baking pan with parchment paper (or you can use an 8-inch cast iron skillet, either works). To make the batter: In a heatproof mixing bowl, add the butter and mini dark chocolate chips.
To make the batter: In a heatproof mixing bowl, add the butter and mini dark chocolate chips. Microwave in 30 second intervals, stirring between each one to prevent burning until it’s completely melted.
Add in the cane sugar and cocoa powder and whisk to combine completely.
Last, add in the bone broth, pumpkin, flour, baking powder, salt, and pumpkin spice. Fold together with a spatula until you have a smooth brownie batter.
Transfer to the prepared baking pan and spread every. Bake for 22 to 27 minutes or until a toothpick inserted in the center comes out clean. Allow the brownies to cool completely in the baking pan.
In a heatproof bowl, add the mini dark chocolate chips. Melt in the microwave doing 30 second intervals to prevent burning.
Drizzle the melted chocolate over the brownies. Top with flaky sea salt.
Cut the brownies into 9 bars.
Store in an air container for up to 5 days.