Jalapeño Popper Grilled Cheese

Bahan-bahan (2 porsi)

• 4 slices sourdough bread (thick cut)
• 1 teaspoon mayonnaise
• 3 ounces cream cheese (softened)
• 2 tablespoons diced jalapeños (or to taste)
• ¼ teaspoon garlic powder
• 2 tablespoons shredded Parmesan cheese
• 4 ounces cheddar cheese (sliced)