In a mixing bowl, combine Greek yogurt, vanilla protein powder, heavy cream, vanilla extract, and monk fruit sweetener. Stir until smooth and well combined.
Fold in the crushed cookies and cream cookies, ensuring even distribution throughout the mixture.
Scoop the mixture into silicone molds or popsicle molds, smoothing out the tops.
Freeze for at least 6 hours or until completely solid.
Melt the white chocolate in a microwave-safe bowl, stirring in intervals to prevent burning. If using, stir in the coconut oil to create a smoother chocolate coating.
Carefully remove the frozen bars from the molds.
Dip the frozen bars into the melted white chocolate or drizzle it over the top for a decorative effect.
Sprinkle with additional crushed cookies if desired for extra crunch and flavor.
Allow the chocolate to set at room temperature or place the bars back in the freezer for a few minutes.
Serve immediately and enjoy your protein-packed, creamy ice cream bars!