Savory Wild Mushroom Bread Pudding

Name: Savory Wild Mushroom Bread Pudding
Ingredients: 2 teaspoons vegetable oil; 1 medium yellow onion, sliced; Smoked Mushrooms; 1 teaspoon minced garlic; 3 teaspoons Emeril's Original Essence or Creole Seasoning; 1 1/2 teaspoons coarse salt; 1 teaspoon freshly ground black pepper; 1/4 cup lager beer; 5 large eggs; 3 cups heavy cream; 1/4 cup molasses; 1 1/2 teaspoons Worcestershire sauce; 1 teaspoon minced fresh thyme; 3/4 cup freshly grated Gouda cheese; 3/4 cup freshly grated white cheddar cheese; 3/4 pound stale white bread, cut into 1-inch cubes (about 10 cups); 1 teaspoon unsalted butter; 1 tablespoon fine dried breadcrumbs