1-First Step: Set up your workspace: Line a large sheet pan with parchment or wax paper so the dipped cookies have a nonstick surface to set on. Arrange two small bowls for white and semisweet chocolate if you plan to do both coatings. If you are using optional coconut oil, have it ready next to your chocolate.

2-Second Step: Melt the chocolate: Melt the 10 ounces white chocolate and 10 ounces semisweet chocolate separately or together depending on how many coated varieties you want. You can melt chocolate using a double-boiler or a microwave. Both methods work well: * Double-boiler method: Fill a pot with an inch or two of water and bring to a gentle simmer. Put the chocolate and 1 teaspoon coconut oil (optional) into a heat-safe bowl set over the pot. Stir constantly until smooth, about 5 to 7 minutes. Keep the bowl above the steam so no water mixes with the chocolate. * Microwave method: Place chocolate and 1 teaspoon coconut oil (optional) in a microwave-safe bowl. Microwave on 50% power in 30-second bursts, stirring between each burst until smooth. This usually takes 2 to 3 minutes total. Be careful not to overheat; stop when a few small unmelted pieces remain, then stir until glossy and smooth.

3-Third Step: Prepare for dipping: Pour the melted chocolate into a small, deep bowl for easy dipping. A bowl about 2 to 3 inches deep works well and prevents spills. If you want to speed up the process and make handling easier, freeze Oreos for 5 minutes before dipping; this helps them hold together and reduces breakage.

4-Fourth Step: Dip the cookies: Use two forks or a dipping tool to submerge each cookie. Place one cookie into the melted chocolate, spoon extra chocolate over the top if needed, then lift with the forks and let excess drip back into the bowl. Tap the forks lightly against the bowl edge to remove extra chocolate. Place each dipped cookie onto the parchment-lined sheet pan. Alternate dipping into white and semisweet chocolate for variety.

5-Fifth Step: Add peppermint and finishing touches: Right after dipping and while the chocolate is still wet, sprinkle crushed candy canes onto the top so they stick. If you want a drizzle effect, let the first coating set slightly, then use the opposite chocolate (white on semisweet or vice versa) to drizzle stripes on top. Work quickly; chocolate sets faster in cool rooms.

6-Final Step: Let cookies set and serve: Let the cookies set on the parchment-lined sheet pan until the chocolate hardens, about 20 minutes at room temperature. If you need them to set faster, chill 5 to 10 minutes in the refrigerator, but be aware that sudden chilling in humid conditions can cause condensation on the chocolate surface. Once set, stack with parchment between layers for storage or pack into boxes for gifting.