The Best Quiche Lorraine

Name: The Best Quiche Lorraine
Prep time: 1 h
Cook time: 1 h 15 min
Total time: 2 h 15 min
Cuisine: Mediterranean, European, French
Ingredients: Dough for single-crust deep-dish pie; 1 package (12 ounces) thick-sliced bacon strips, coarsely chopped; 3 large sweet onions, chopped; 1 tablespoon minced fresh thyme; 1/2 teaspoon coarsely ground pepper; 1/8 teaspoon ground nutmeg; 1-1/2 cups shredded Gruyere cheese; 1/2 cup grated Parmesan cheese; 8 large eggs; 2 cups 2% milk; 1 cup heavy whipping cream