Preheat oven to 350°F. Grease a standard muffin tin and set aside.
In a medium bowl, whisk the flour, baking soda, and salt together. Set aside.
1 ½ cups (222g) gluten free flour*, ½ teaspoon baking soda, ½ teaspoon salt
Using a hand mixer or a stand mixer fitted with the paddle attachment, cream the butter with both sugars until smooth. Add the egg and vanilla extract and beat to combine.
½ cup (113g) unsalted butter, ½ cup (100g) granulated sugar, ¼ cup (50g) brown sugar, 1 egg*, ½ teaspoon vanilla extract
Add the dry ingredients into the wet ingredients and mix on low speed until combined. Fold in the chocolate chips.
½ cup (85g) semisweet chocolate chips
Using a cookie scoop, scoop dough into muffin tin, using your hand or the back of the spoon to pack the dough in. Bake for 12-14 minutes, or until cookie cups are lightly browned. Immediately after removing from the oven, use the back of a spoon or measuring cup to push down at the center of each cookie cup, creating a well in the center.
Allow cookie cups to cool in muffin tin completely before attempting to remove and filling with ganache.
To make the ganache:
In a microwave safe bowl or mug, heat heavy cream for about :45-:55. Cream should be hot but not scorching. Remove from the microwave and pour over chocolate chips. Let the mixture sit for 2 minutes before stirring.
½ cup (120ml) heavy cream, 4 ounces semisweet chocolate chips
Cool ganache completely, then spoon into the center of each cookie cup. Refrigerate the cookie cups for about 20 minutes to allow for the ganache to set before serving.
Notes
If you are not looking to make these cups gluten free, feel free to use all-purpose flour.
To make these cookie cups eggless, I recommend using 1 tablespoon of Bob's Red Mill Egg Replacer mixed with 2 tablespoons of water. Be sure to follow the instructions on the package.
The cookie dough will be slightly crumbly, but should hold together if you use your hands to push into the tin.
Be sure to cool cookie cups completely before removing from the muffin tin. If you try to remove too soon, they may fall apart.