Preheat your oven to 400 degrees. Line 2 regular sized cupcake tins with paper liners. Set aside.
Combine the flour, sugar, poppy seeds, baking powder, baking soda, and salt in a large bowl. Gently whisk.
Stir together the eggs, yogurt, apple sauce, lemon zest, 1/3 cup lemon juice, and extract if using. Fold into the dry ingredients. Hand mix until all of the ingredients are incorporated.
Divide between 18 muffin cups. Bake 13-15 minutes or until a toothpick inserted into the center comes out clean.
Whisk together the confectioners sugar and remaining 1/4 cup of lemon juice. Dip or drizzle your muffins.
Notes
I like to use coconut oil in place of the vegetable oil in this recipe but have had success with both!