A rich and crispy grilled cheese sandwich layered with creamy avocado, melted provolone, and tangy sun-dried tomato pesto. Seasoned onion-garlic butter gives the bread a deeply flavorful golden crust.
3 tablespoons salted butter
2 teaspoons onion powder
1 teaspoon garlic powder
1 teaspoon kosher salt
1 teaspoon dried thyme
2 slices whole wheat white bread or bread of your choice
1 tablespoon sun dried tomato pesto
1/2 avocado, mashed
4–5 slices provolone cheese
1 teaspoon olive oil