Pressure-Cooked Orzo with Zesty Garlic and Cheeses

Ingredients

• 2 teaspoons olive oil
• 2 teaspoons unsalted butter
• 4 garlic cloves, minced
• 1 1/2 teaspoons fresh thyme leaves
• 3/4 teaspoon salt
• 2 1/4 cups chicken broth
• 1/2 teaspoon garlic powder
• 2 cups grated Parmesan cheese
• 1 small onion, diced
• 1 1/4 cups half and half
• 1 1/2 cups shredded mozzarella cheese
• 12 ounces orzo pasta