Wash strawberries; pat completely dry with paper towels so chocolate adheres. Line a baking sheet with parchment.
Microwave chocolate with 1 tablespoon coconut oil in a microwave-safe bowl at 30-second intervals, stirring between each, until melted and smooth.
Hold berries by stems; swirl in chocolate to coat about 3/4 and let excess drip into bowl.
Place on sheet; add optional sprinkles immediately while chocolate is wet.
For optional drizzle, melt white chocolate with remaining 1 tablespoon coconut oil; transfer to a small zip-top bag, snip a tiny corner, and drizzle.
Refrigerate 30 minutes until completely set.
Enjoy within 24-48 hours; store airtight in refrigerator with parchment between layers.