Spicy Cornbread Mini-Muffins

Ingredients

• 1 cup all-purpose flour
• 1 cup yellow cornmeal
• 1/4 cup white sugar
• 4 teaspoons baking powder
• 1/2 teaspoon salt
• 1 teaspoon garlic powder
• 1 1/2 cups finely shredded Cheddar cheese
• 1 cup milk
• 2 eggs
• 1/4 cup vegetable oil
• 3 canned jalapeno peppers - stems and seeds removed and peppers finely diced
• 1/4 teaspoon vanilla extract
• 1 tablespoon butter, melted - divided
• 3 tablespoons yellow cornmeal, or as needed - divided