Add the frozen edamame, frozen kale, basil, garlic, jalapeños, miso paste, lemon zest, lemon juice, and olive oil to a food processor along with a big pinch of salt.
Start on a low speed and gradually increase to high. If the mixture is too thick to move, add 1–2 tablespoons of water or additional olive oil at a time until it begins to move. Be careful not to add too much liquid.
Taste the spread. Add more lemon juice or salt as needed. It will almost certainly need more lemon juice. Give it one final pulse to combine.
Transfer to an airtight container and optionally smooth the surface with a spoon and squeeze lemon juice over the top to keep the top layer from browning.