To make croutons, preheat oven to 350 degrees. In a medium bowl, combine 2 cups bread cubes, 1 tablespoon olive oil, 1 teaspoon fresh thyme leaves, 1 minced garlic clove and ¼ teaspoon sea salt; toss to coat. Spread in a single layer on a baking sheet lined with parchment paper. Sprinkle with 2 tablespoons grated Asiago cheese. Bake for 20 minutes or until golden brown and crispy, stirring halfway through. Let croutons cool completely before using.