Coconut Ice Cream Sandwiches With Salty Chocolate Shell

Cookies

¾

cup (packed; 150 g) light brown sugar

½

cup (1 stick) unsalted butter, room temperature

1

large egg

1

tsp. dark rum or vanilla extract

1¼

cups (156 g) all-purpose flour

1

cup sweetened shredded coconut

1

tsp. baking soda

1

tsp. Diamond Crystal or ½ tsp. Morton kosher salt

1

pint vanilla or coconut ice cream

Chocolate Shell

2

cups bittersweet chocolate chips

¼

cup refined coconut oil

½

tsp. Diamond Crystal or ¼ tsp. Morton kosher salt

Flaky sea salt