- 2 teaspoons canola oil
 - 1 medium sweet onion, chopped
 - 1 (12 ounce) bottle dark or amber beer
 - 1 teaspoon dried thyme leaves
 - 1 teaspoon dry mustard
 - 3/4 teaspoon salt
 - Freshly ground pepper, to taste
 - 1 1/4 pounds lean ground beef
 - 1 1/4 pounds lean ground turkey
 - 1 cup fresh whole-wheat breadcrumbs (see Tip)
 - 1/4 cup chopped fresh parsley
 - 1 large egg, lightly beaten
 - 1 egg white, lightly beaten
 
- Preheat oven to 375 degrees F. Coat an 8 1/2-by-4 1/2-inch loaf pan with cooking spray.
 - Heat oil in a large nonstick skillet over medium-high heat. Add onion and cook, stirring often, until translucent and starting to brown, about 5 minutes. Pour in beer and increase heat to high. Bring to a vigorous boil; cook until the liquid is quite syrupy and the mixture reduces to about 3/4 cup, 8 to 10 minutes. Transfer to a large bowl. Stir in thyme, dry mustard, salt and pepper. Let cool for 10 minutes.
 - Add beef, turkey, breadcrumbs, parsley, beaten egg and egg white to the onion mixture. Mix thoroughly with clean hands and transfer to the prepared pan.
 - Bake the meatloaf until an instant-read thermometer registers 160 degrees F when inserted into the center, about 1 hour 20 minutes. Let rest for 5 minutes; drain accumulated liquid from the pan and slice. Serve hot or cold or in a sandwich.