Preheat the oven to 350 degrees and line a baking sheet with a Silpat-type mat (optional). Combine the cake mix, egg whites, vegetable oil, and flour mixing well. Add several drops of the to the cookie dough and mix well.
I even used my hands after getting it started. Use a small cookie scoop to roll the cookie dough into 2" balls and place 2-3" apart on your baking sheet for 8-10 minutes.
Remove from the oven and let cool.
Place your marshmallows on parchment paper and spray with the Wilton silver color mist. Let them try, flip them, and spray the other side.
Add several drops of red gel food coloring to the white frosting mixing well. Attach the tip and fill the bag with frosting
Generously frost each cookie. If not using the bag and frosting tip, simply use a small spatula to generously frost each cookie.
Place one hammer on top of each cookie. Repeat with all cookies.
Your amazing Thor cookies are now ready.
Notes
Use a small cookie scoop to roll the cookie dough into 2" balls for uniform size and even baking.
Generously frost each cookie to ensure the marshmallow "hammer" adheres well and adds to the fun presentation.
Customize the frosting color by adding a few drops of gel food coloring to match your party's theme or your kids' favorite colors.