Lay out the slices of bread on a clean surface. If using fresh fruit slices, thinly slice them and set aside.
Spread peanut butter evenly on one slice of bread.
Spread jelly or jam evenly on the other slice of bread.
If using fresh fruit slices, place them on top of the peanut butter.
Carefully place the slice with jelly/jam on top of the slice with peanut butter, aligning the edges.
Press down gently to ensure the fillings are distributed evenly.
Use the round sandwich sealer, cookie cutter or glass to cut out a circle from the sandwich, removing the crusts. Press down firmly to ensure a clean cut.
Add the sandwich sealer piece to the round sandwich cutter and press down to seal the sandwich. If using a cookie cutter or glass, use a fork to press down and crimp the edges of the bread circle, sealing the sandwich. Make sure to press firmly to prevent the fillings from leaking out.
Notes
To make-ahead: If you’re making these for later, wrap each uncrustable in plastic wrap or place it in a sandwich bag. Store in the refrigerator for up to 2 days or freeze for up to 1 month.
Make it gluten-free: Use your favorite soft gluten-free bread.
Optional add-in's: Sometimes if I'm feeling fancy I add fresh fruit slices like strawberries or banana to the uncrustables. Or I'll drizzle on some honey for an added touch of sweetness.