Mix rice flour, semolina, yogurt, and chopped veggies into a smooth batter.
Season with mustard seeds, curry leaves, green chilies, and salt.
Grease the appe pan and heat it over medium flame.
Pour the batter into each mold, filling them halfway.
Let the appe cook on low heat until golden brown underneath.
Turn each appe gently using a spoon for even cooking.
Enjoy with coconut chutney or tomato ketchup for extra flavor.