Heat oven to 350 degrees. Butter the bottoms of 12 regular-sized muffin cups and set aside.
Mix melted butter and sugar together. Stir in egg and vanilla until fully incorporated.
Add flour, soda and salt and mix. Stir in chocolate chips.
Divide batter evenly between the muffin cups, each should be about 1/2 full - no need to smooth out, they'll level as they bake.
Bake 10-12 minutes until lightly brown and puffy.
Cool in tin 30 minutes to 1 hour until the cookie cups centers have sunk, creating the 'cup' for ice cream. Remove cups from tin, loosening with a knife or thin spatula, and continue cooling on a wire rack.
Serve with a scoop of ice cream drizzled with chocolate syrup.
Notes
*You can use all-purpose instead.**More filling ideas:
Your favorite frosting - vanilla, chocolate, peanut butter.
Nutella
Mousse
Pudding
Make Ahead: The cups can be made up to a day ahead and kept at room temperature in an airtight container. The also freeze beautifully in airtight containers - take out in the morning to thaw for an evening meal.Nutrition Note: facts were calculated for cookie cups only.