Corned Beef and Cabbage Grilled Cheese

Ingredients (12)

• 1 tablespoon extra virgin olive oil
• 3 cups sliced green cabbage
• 1/2 cup sliced yellow onion
• 1/4 teaspoon kosher salt
• 1/4 teaspoon black pepper
• 1/2 cup water
• 2 teaspoons Worcestershire sauce
• 4 ounces corned beef
• 4 slices pumpernickel
• 2 tablespoons unsalted butter
• 1 tablespoon whole grain mustard
• 1 cup grated Irish cheddar cheese