Instructions
In a small bowl, whisk together the sour cream, chopped onion, dried oregano, and salt until well combined, creating a creamy and flavorful spread that will infuse each bite with zest and herbaceous notes. Generously spread this mixture onto four slices of bread, ensuring an even layer that will serve as the moist, tangy foundation of your lasagna sandwiches. Next, layer each with two slices of crispy bacon, a couple slices of ripe, juicy tomato, and one slice of mozzarella cheese to build richness and balance. Top each assembled slice with the remaining bread slices, pressing gently to compact the flavors. Heat a large skillet or griddle over medium heat and melt 2 tablespoons of butter, enough to coat the cooking surface generously. Carefully place the sandwiches onto the skillet, toasting until each side turns a light golden brown and the mozzarella inside melts perfectly, about 3-4 minutes per side. Add more butter as needed to maintain a beautiful crust. Tip: Use fresh, high-quality mozzarella for the best melt and flavor. For added crunch, consider lightly pressing the sandwiches while cooking with a spatula. Serve warm to enjoy the gooey cheese and crispy exterior to their fullest.