Cheesy Butterfish-Stuffed Pastry Cups

Ingredients

• For the dough:
• ¼ cup water
• 1 teaspoon active dry yeast
• 1 teaspoon sugar
• 1 cup flour
• ½ cup yogurt (3-4 ounces)
• 1 tablespoon vegetable oil
• For the filling:
• 1 teaspoon vegetable oil
• 1 large onion, diced
• 4 ounces of frozen spinach, thawed
• 10 ounces of smoked butterfish, shredded
• salt
• pepper
• 1 egg, whisked
• 4 ounces of low moisture mozzarella, grated
• 1 teaspoon lemon juice