Heat oven to 400ºF. Line two baking sheets with parchment.
Spread the vegetables into a single layer on one of the baking sheets. Drizzle with olive oil; season with salt and pepper. Toss the tofu with cornstarch and za'atar, if using, and arrange on the other baking sheet. Bake 30-40 minutes, or until the vegetables are soft and the edges of the tofu begin to brown.
Add the freekeh and vegetable stock to a medium saucepan and bring to a boil. Cover and cook 20 minutes. Remove from heat and let sit 5 minutes.
To prepare the sauce, mix the tahini, almond butter, and lemon juice in a small bowl. Slowly add the almond milk and whisk until smooth.
Serve the vegetables over the cooked freekeh. Drizzle with tahini-almond sauce.