Gluten-Free Triple-Chocolate Chunk Cookie

INGREDIENTS

Egg yolk, large

Eggs, large

1/2 tsp

Baking soda

3/4 cup

Brown sugar, packed light

2 cups

Gluten-free flour

1 tsp

Kosher salt

Sea salt, Flaky

1/2 cup

Sugar, organic

2 tsp

Vanilla extract

3/4 cup

Cultured butter, unsalted

1 cup

Bittersweet chocolate chunks or discs

1¼ cups milk chocolate chunks or discs

½ cup white chocolate chunks or discs