European Kitchen - Creamy Mustard Chicken

Creamy Mustard Chicken with Roasted Vegetables

5 chicken breasts, cut into strips

Salt and black pepper

2 tablespoons oil

1 tablespoon butter

1 small onion, finely chopped

2 cloves garlic, minced

1 cup sliced ​​fresh mushrooms

1 cup sliced ​​bell peppers (red and yellow)

1 teaspoon chopped fresh rosemary

1 teaspoon dried thyme

1 tablespoon Dijon mustard

2 cups heavy cream

½ cup chicken broth

1 teaspoon paprika

Juice of ½ a lemon

¼ cup grated Parmesan cheese