Nutella Stuffed Oatmeal Hazelnut Chocolate Chip Cookies

INGREDIENTS

1 cup

butter, room temperature

1 cup

dark brown sugar

1/3 cup

white sugar

large eggs

1 tsp

vanilla extract

1 1/2 cups

all-purpose flour

1 tsp

baking soda

1 tsp

kosher salt

3 cups

rolled oats

8 oz

dark chocolate (chopped)

3/4 cup

hazelnuts (toasted and chopped)

1/2 cup

Nutella (or any chocolate hazelnut butter)

Flaky sea salt (optional but recommended)