Preheat oven to 375 degrees. Place heart silicone baking molds or heart baking pans onto a cookie sheet.
Combine flour, baking soda, baking powder and salt into a bowl. Set aside.
Cream butter and sugars together until very fluffy. Add egg and mix well. Stir in the vanilla. Stir in flour mixture and mix until just combined. Mix in chocolate chips.
Using a medium cookie scoop (2 Tbsp.), drop cookie dough balls into molded cavities. Press down slightly to flatten. Bake 12-14 minutes or until tops are golden brown.
Cool cookies COMPLETELY in baking molds. Run a butter knife around the edges of each heart shaped cavity. Remove cooled cookies.
Video
Notes
Store in airtight container or cookie jar for up to 3 days on the counter. Can also store in freezer for a few months.