Seafood: Cheddar Bay Biscuit Pot Pie

Ingredients

• 2 tablespoons unsalted butter
• 1 small onion, diced
• 2 cloves garlic, minced
• 2 tablespoons all-purpose flour
• 1 cup seafood stock or chicken broth
• 1 cup heavy cream
• 1 teaspoon Old Bay seasoning
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1 cup cooked shrimp, peeled and chopped
• 1 cup lump crab meat or imitation crab
• 1 cup frozen peas and carrots
• 1 tablespoon fresh parsley, chopped
• 1 package Cheddar Bay Biscuit mix (such as Red Lobster brand)
• Cold water and shredded cheese (as directed on the box)
• 2 tablespoons melted butter + 1/2 teaspoon garlic powder (for brushing)