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1
Preheat an oven to 375 degrees F (190 degrees C).
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2
Combine panko, paprika, poultry seasoning, and salt and pepper in a shallow dish; set aside.
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3
Place the chicken breasts between two sheets of heavy plastic (resealable freezer bags work well) on a solid, level surface.
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4
Firmly pound the chicken with the smooth side of a meat mallet to a thickness of about 3/8 inch.
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5
Place a slice of Cheddar cheese and a slice of coppa ham on the center of each chicken breast, then fold the chicken over the filling and secure with kitchen string.
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6
Dip each rolled chicken breast into the beaten egg, then into the seasoned panko until evenly coated.
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7
Heat the butter and olive oil in a large skillet over medium-high heat.
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8
Pan fry the coated chicken breasts until browned on all sides, 7 to 10 minutes.
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9
Transfer the browned chicken breasts in a baking dish.
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10
Bake the chicken breasts in the preheated oven until no longer pink in the center and the juices run clear, about 30 minutes.
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11
An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).
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12
Arrange another slice of white Cheddar cheese over each chicken breast and return to the oven.
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13
Bake until the cheese has melted, about 5 minutes.
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14
Meanwhile, pour the white wine and chicken bouillon granules into the skillet used to cook the chicken.
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15
Cover and simmer over low heat until reduced, about 30 minutes.
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16
Mix the cornstarch and heavy cream in a bowl; slowly whisk the cornstarch mixture into the wine mixture.
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17
Continue cooking and stirring until the sauce has thickened, about 3 minutes.
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18
Serve the chicken topped with the cream sauce.