1 tbsp pure maple syrup and 1 packet of stevia (or 2 tbsp pure maple syrup)
3 tbsp chia seeds
1 tsp pure vanilla extract
Instructions
Put the blackberries, blueberries, lemon juice, and orange juice (optional) in a small pot over medium-high heat. As the berries soften, smash them with a fork or potato masher. This usually takes about 5 minutes.
Once the berries are mostly liquid (but still a bit chunky), add the sweetener, chia seeds, and vanilla. Cook over medium-low heat for 5 minutes to let the flavors combine and the jam thicken a bit.
Remove from heat and let cool completely.
Place in an air tight container and store in the fridge for up to 10 days. The jam will thicken more overnight as the chia seeds absorb the liquid.