Preheat oven to 180°C (350°F) and grease a muffin tin well.
In a bowl, whisk chickpea flour, plant-based milk, nutritional yeast, baking powder, salt, pepper, and turmeric until smooth.
Let the batter rest for 5 minutes to thicken slightly.
Gently fold in the chopped vegetables until evenly mixed.
Pour the mixture into muffin cups, filling each about ¾ full.
Bake for 20–25 minutes, until tops are firm and lightly golden.
Remove from oven and let cool for 5 minutes before removing from the tin.
Serve warm or allow to cool completely for storage.