Popcorn Muffins

This is from my grandmother's recipe box and I have not tried them yet. They sound odd but interesting :)

• Ready In: 40 mins
• Serves: 12

Ingredients

• 1 1⁄2 cups flour
• 3⁄4 cup  ground  popcorn
• 4  teaspoons baking powder
• 1  teaspoon salt
• 1  tablespoon sugar
• 2  tablespoons butter, melted
• 1  cup milk
• 1  egg

Directions

1. Sift flour, powder, salt and sugar together.
2. Add milk, popcorn and egg, well beaten, and melted butter.
3. Bake at 25 minutes at 350* in greased or lined muffin tins.