Ingredients
For the batter:
4 large eggs
½ teaspoon kosher salt
½ teaspoon freshly ground black pepper
2 pinches cayenne pepper
1 cup all-purpose flour
1 tablespoon all-purpose flour
¾ cup whole milk
¼ cup cold water
For the sausages:
¼ cup vegetable oil
4 links pork sausage
For the onion gravy:
2 tablespoons butter
1 large red onion, minced
kosher salt to taste
3 tablespoons all-purpose flour
2 cups chicken broth
¼ teaspoon Worcestershire sauce
1 teaspoon balsamic vinegar
2 tablespoons onions, spring or scallions (includes tops and bulb), raw
1 teaspoon chopped fresh chives, or to taste
Directions
Prepare batter: Combine eggs, salt, pepper, cayenne, 1 cup plus 1 tablespoon flour, and milk in a large bowl; whisk thoroughly until batter is very smooth and no lumps remain. Whisk in water. Cover and let rest at room temperature for 1 hour.
Prepare sausages: Heat vegetable oil in a skillet over medium-high heat. Add sausages and cook until browned, 2 to 3 minutes per side. Remove from the heat and transfer to a buttered 9×12- or 9×13-inch baking dish. Pour oil from the skillet over the sausages; brush oil with a pastry brush all over the bottom and up the sides of the dish.
Start onion gravy: Melt butter in the same skillet over medium-high heat. Add onion and salt; saute until soft and starting to brown, 5 to 6 minutes.
While onion is cooking, pour batter in and around the sausages. Place in the center of a cold oven and turn temperature to 500 degrees F (260 degrees C). Set oven timer for 30 minutes.
While toad in the hole cooks, finish onion gravy: Stir in flour and cook for about 2 minutes. Whisk in chicken broth and return to a simmer. Add Worcestershire sauce and balsamic vinegar and simmer until gravy thickens up and reduces, about 5 minutes. Reduce heat to low and stir in green onions. Taste and adjust seasoning.
When timer goes off, remove toad in the hole from the oven; it should be browned and puffed. Spoon gravy over the sausages and garnish with green onions and chives.
borrowed from: https://www.allrecipes.com/recipe/284679/toad-in-the-hole