Line a baking sheet with parchment paper.
Arrange 30 Ritz crackers face down on the sheet.
In a microwave-safe bowl, combine the caramels and heavy cream. Microwave in 30-second intervals, stirring until smooth.
Spoon a small amount of melted caramel onto each cracker, then top with another cracker to create a sandwich.
Freeze the sandwiches for 10 minutes to firm up.
In another microwave-safe bowl, combine chocolate chips and coconut oil. Microwave in 30-second bursts, stirring until melted and smooth.
Dip each sandwich into the chocolate, coating completely, and place back on the lined sheet.
Sprinkle each cookie with flaky sea salt before the chocolate sets.
Chill until firm, about 15 minutes. Store in an airtight container.