Spanish cheese made from milk of sheep of the Manchega breed differs from other cheeses in a special zigzag pattern on the surface. Manchego cheese is quite fatty and has a characteristic salty taste. If replacing manchego in a recipe, use another hard, savory cheese.
Preheat oven to 200 degrees. Heat oil in a skillet, add mushrooms, salt and cook over medium heat for 5 minutes to let the mushrooms start juicing.
Add garlic and paprika. Cook for 1 minute. Add wine, 1 teaspoon. pepper, increase the heat and simmer until the number of liquid decreases by ¾. Stir in parsley and remove from heat.
Spoon the mushroom mixture onto toasted bread slices. Top with cheese sliced with a vegetable peeling knife. Place in the oven for 2 minutes to melt the cheese. Serve the sandwiches hot.