Heat fruit in a small saucepan over medium-high heat, stirring occasionally until the fruit is heated through and begins to break down and bubble. Use a fork or potato masher to mash the fruit to your desired consistency.
Stir in the chia seeds until combined.
Reduce heat and simmer for 2-4 minutes
Remove from heat and let cool for 5-10 minutes. (The jam will thicken considerably as it cools.)
Give the jam one final good stir. Make sandwich by toasting bread and spreading one slice with peanut butter and 1 slice with jam. Transfer leftovers to a sealed container and refrigerate for up to 2 weeks.
TIP: I love to serve this with a tall glass of unsweetened soy milk, a piece of fruit and an easy veggie (like baby carrots)