Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  2        tablespoons  butter
  1                     onion -- thinly sliced
  1         tablespoon  golden brown sugar
     1/4      teaspoon  white wine vinegar
  1 1/2           cups  grated smoked gouda cheese
  4            10 inch  flour tortillas
  2             ounces  sliced prosciutto -- chopped
  2        tablespoons  butter -- melted

Preparation:

Melt 2 tablespoons butter in heavy medium skillet over medium heat. Add onion, brown sugar and vinegar; saut‚ until onion is golden brown, stirring frequently, about 25 minutes. Remove from heat. Cool to room temperature. Preheat oven to 350øF. Sprinkle cheese over half of each tortilla, dividing equally. Sprinkle prosciutto and saut‚ed onion over cheese. Season with pepper. Fold other half of each tortilla over cheese mixture. Brush tortilla with some of melted butter. Brush heavy large skillet with some of melted butter. Place over medium-high heat. Working in batches, cook quesadillas just until brown spots appear, brushing skillet with butter between batches, about 2 minutes per side. Transfer quesadillas to heavy large baking sheet. Bake until tortillas are golden and cheese melts, about 5 minutes. Transfer quesadillas to work surface. Cut each into 6 triangles. Arrange on platter and serve hot.

Nutritional Information:

231 Calories (kcal); 11g Total Fat; (43% calories from fat); 4g Protein; 28g Carbohydrate; 21mg Cholesterol; 308mg Sodium