Over low heat, mash and cook berries until they are runny and jam-like.
Remove from heat and place in fridge until cool.
Spread jam on bread and place an additional piece of bread on top to create a sandwich.
Cut lengthwise or use cookie cutters to cut.
Notes:
If your berries are very dry or don't give you enough juice to cook the berries without burning them, you can add water, 1 tablespoon at a time, as needed. But don't go overboard or your jam won't thicken.
Notes
Please note that the nutrition data given here is a ballpark figure. Exact data is not possible.