Here's a recipe that will put your homemade vanilla to good use.
4 cups flour
2 cups sugar
1 Tablespoon + 2 teaspoons baking powder
1 teaspoon salt
2 cups milk
1 Tablespoon vanilla extract (I may do a little bit more next time)
8 Tablespoons butter, melted
Combine and whisk wet.
Add wet to dry.
I sprinkled the tops with maple sugar - not necessary but quite good.
Bake at 400 for 20 minutes.
Makes about 2 dozen muffins, or 10 giant-Jon-sized muffins.