Heat a medium pot (with a lid) over medium-high heat. Add the rinsed wheat berries and toast them, stirring constantly for 5 minutes.
Add 3 cups of water and a pinch of salt to the pot and bring it to a boil. Turn the heat down, cover, and simmer the wheat berries for 30-35 minutes. Taste and continue cooking, adding more water as needed until the kernels are tender and chewy. Drain any excess liquid after cooking.
While the wheat berries cook, preheat the oven to 400 F (200 C).
Peel and cube the sweet potatoes. Place them in a single layer on a parchment-lined baking tray and bake for 15-20 minutes until they are fork-tender.
To make the dressing, whisk together the almond butter, rice vinegar, garlic, soy sauce, and maple syrup in a small bowl. If the dressing is too thick, add a bit of water.
Prep the lettuce, carrot, scallions, walnuts, and cranberries and place them in a large salad bowl.
Add the cooked wheat berries and sweet potatoes. Mix well.
Toss with the dressing or serve it on the side.