Preheat the oven to 400 Fahrenheit or 200 degrees Celsius.
Sauté the garlic until fragrant and cherry tomatoes in the cast iron skillet on the stove until fragrant.
Add the frozen peas over the top and let them thaw in the pan.
Meanwhile, boil a liter of water and pour this over your 3 cubes of frozen spinach.
While the veggies are cooking on the stove, in a large mixing bowl, mix together the sourdough starter, salt, baking powder and baking soda.
When the veggies are done cooking, add the dal into the cast iron skillet and season with salt and pepper.
Spread the sourdough mixture over the top of the veggies, and sprinkle with sesame seeds.
Bake for 25 minutes, or until bread is cooked through and golden brown on top. If you’re not sure, poke the top of the skillet with a toothpick, chopstick or knife. It should come out clean, just like when you’re making sure a cake is done. I love leaving it in until the top is just ever so slightly crispy.