Add all of the ingredients to the bowl of a pressure cooker. This includes dried black beans, red onions, jalapeno, bay leaf, salsa, veggie stock, spices, and salt. Give it all a good stir.
Secure the lid. Set the vent to “pressure”. Use the buttons to select “high pressure” and the cook time is 37 minutes. Press start.
When the black beans are finished cooking, allow the pressure to naturally and completely release. This is important as the beans continue to cool during the natural release process. Do not use the quick release function.
Gently remove the lid. Carefully remove the bay leaf. Give it all a good stir. Serve them warm.
Preheat the oven to 425 degrees Fahrenheit. Line a baking sheet with parchment paper.
Cut the polenta into 1/2 inch thick rounds. You'll need 12 slices. Arrange them in a single layer on the parchment paper-lined cookie sheet. Lightly spray the tops with avocado spray, garlic powder, and salt.
Bake the polenta for 23 minutes or until the edges are light golden brown. Remove from the oven and set them aside to cool. Once cool, transfer them to a cutting board and cut each slice into quarters.
In a medium glass bowl, add the finely shredded cabbage, chopped tomatoes, olive oil, maple syrup, apple cider vinegar, lime juice, and salt.
Give it all a good toss and set aside.
Layer the four mason jars in this order: one polenta slice cut into quarters, black beans, polenta, black beans, polenta, and then slaw. Repeat this step for all four mason jars and then secure them with lids. Place them in the fridge.
When you are ready to eat a jar, pour the contents into a bowl. Top with leftover fresh salsa and guacamole. Enjoy!