Toad-in-a-Hole Sandwiches Recipe

Ingredients

• 1 large yellow onion, thinly sliced
• 8 tablespoons unsalted butter, divided
• ¾ teaspoon kosher salt, divided
• 1 (16-ounce) package smoked sausage, cut into 3-inch pieces and halved lengthwise
• 8 slices thick-cut sandwich bread, divided
• 4 large eggs
• ½ teaspoon ground black pepper
• 4 slices sharp Cheddar cheese
• Hot sauce, optional