In a large bowl, whisk together soy milk, ¼ cup of yogurt, peanut butter, 2 teaspoons of honey, and salt until smooth and well mixed.
Add the rolled oats to the mixture, stir gently to combine, then cover and chill the bowl overnight or for at least 8 hours to let the oats absorb the liquid.
In a separate bowl, mash 1 cup of raspberries with a fork until they are flattened.
Mix the chia seeds and remaining 1 teaspoon honey into the mashed raspberries, then let the mix rest at room temperature for 10 minutes, stirring occasionally.
Once rested, whisk the remaining ¼ cup yogurt into the raspberry mixture and store it in the fridge until serving time.
To assemble, layer ½ cup of the oat mixture into each jar, followed by ¼ cup of the raspberry blend.
Add another ½ cup of oat mixture on top of the raspberry layer.
Divide the remaining raspberry mixture equally (about 2 tablespoons per jar) over the oats.
Finish by sprinkling the last ¼ cup of fresh raspberries on top of each jar before serving.