Prepare the Apple Slices: Wash the apple thoroughly and core it using an apple slicer or by hand. Cut the apple into thin, even slices approximately 1/8-inch thick. Arrange the slices in a single layer across a large serving plate, spreading them out so each piece has space for toppings.
Melt the Peanut Butter: Place the peanut butter in a microwave-safe bowl and warm it in short bursts of 15 seconds, stirring in between, until it reaches a smooth, drizzle-friendly consistency. Avoid overheating to prevent separation.
Melt the Chocolate Chips: In a separate microwave-safe bowl, heat the semi-sweet chocolate chips in 20-second intervals, stirring each time, until completely melted and silky. Alternatively, melt using a double boiler on the stove for more control.
Drizzle Toppings Over Apples: Using a spoon, gently drizzle the warm peanut butter evenly over the arranged apple slices. Repeat this with the melted chocolate, creating a beautiful layered effect. Be generous or light with the drizzle based on your preference.
Add Final Chocolate Chip Sprinkle: Scatter the handful of mini and regular chocolate chips over the top to add texture and extra bursts of chocolate flavor.
Serve Immediately: Enjoy this treat right away for the best combination of crisp apple and smooth toppings. If needed, refrigerate briefly before serving to slightly firm up the drizzles.