In a medium bowl, combine flour with cocoa powder. Set aside. In a separate mixing bowl, with a hand mixer, cream the butter and sugar until light and fluffy. Add egg and vanilla extract, and beat again.
Use a medium cookie scoop to drop the dough onto the lined baking sheet, leaving two inches between each cookie. Bake for 10 minutes, or until the cookies are set and the tops are no longer shiny/glossy.
To make the frosting, in a large bowl with a hand mixer, or in the bowl of your stand mixer, beat the butter at medium speed for 1 minute, or until creamy.
If needed, add a small amount of milk to the frosting to get it to the perfect piping consistency. Divide the frosting in half into two separate bowls. Use food coloring to tint one bowl yellow, and the other with orange color.
To combine the frostings, lay out two pieces of plastic wrap. Add the frosting to the wrap, and then roll it up into a tube shape, twisting the ends to seal. Snip off one of the twisted ends from each tube.
Add a star tip to a large piping bag, then add both colors of frosting, with the open end of the rolls pointing down toward the tip. Add a swirl of buttercream to each cookie.
To decorate, carefully melt the chocolate chips in the microwave at 15-second increments mixing in between. Add coconut oil if needed to thin out the consistency.
Add the melted chocolate to a piping bag, snip off a small piece of the corner to pipe a line that is not too thin or too thick to create the grill grids.
Then create grill shapes/grids with the melted chocolate about 2 inches wide (or the size of your cookies). Allow to set and harden in the fridge completely before peeling off the parchment.
To make the gummy kabobs, use toothpicks as skewers and add 3-4 gummy bears and dots (that are cut in half) on each. You can use a black edible marker to create charred kabobs.