Line your mini muffin tin with muffin cups and set aside. You'll either make multiple batches or need multiple tins, depending on how much you want to make.
In your mixer, beat together the peanut butter and butter until it's mixed and creamy.
½ Cup Creamy Peanut Butter, 3 Tbsp Butter
Add in the powdered sugar, graham cracker crumbs, vanilla, and salt, and beat until it has a dough-like consistency.
1 Cup Powdered Sugar, ½ Cup Graham Cracker Crumbs, 1 Tsp Vanilla Extract, ¼ Tsp Salt
Make little balls of about ½ teaspoon of peanut butter mix, and flatten them into discs. You can chill this a little to make it easier to work with. Use an extra muffin cup to measure the size.
Melt your chocolate. You can do this in the microwave but I prefer a double boiler.
3 Cups Chocolate
Measure a teaspoon of chocolate into each muffin cup to coat the bottom. Add in your discs of peanut butter to each on top of the chocolate. Optionally, add a dollop of jam or another add-on on top. Then, cover it all with another teaspoon of chocolate.
Tap the muffin pan to level the chocolate and remove any air gaps, then move it to the fridge to chill for at least 30 minutes, or until the chocolate is set.