Soften the ice cream: Set the ice cream out at room temperature for 10–15 minutes until it’s scoopable but not melting.
Mix the peanut butter swirl: In a small bowl, stir peanut butter with vanilla extract and a pinch of salt.
If the peanut butter is very thick, microwave it for 10–15 seconds to loosen.
Prepare your assembly line: Line a baking sheet with parchment paper. Place a layer of Oreos flat-side up on the sheet. Keep your toppings in small bowls nearby.
Layer the filling: Add about 1 tablespoon of the peanut butter mixture onto each Oreo.
Top with a rounded scoop of softened ice cream (about 2 tablespoons).
Cap the sandwich: Press a second Oreo on top, twisting gently to spread the ice cream to the edges. Don’t press so hard that the cookies crack.
Add coatings (optional): Roll the exposed ice cream edges in mini chips, nuts, or crumbs. Lightly press so they stick.
Freeze to set: Place the sandwiches back on the parchment-lined sheet.
Freeze for 1–2 hours, or until firm enough to handle and stack.
Finish with a drizzle (optional): Once set, drizzle with melted chocolate or warm peanut butter. Freeze again 10 minutes to harden.
Serve or store: Enjoy right away, or wrap individually and keep in the freezer for later.