Season the chicken breasts with salt, pepper, and paprika on both sides.
Heat butter in a large skillet over medium heat and sear the chicken breasts until golden brown on each side. Remove from skillet and set aside.
In the same skillet, sauté the onion and garlic until fragrant and softened.
Sprinkle flour over the onion mixture and cook for 1-2 minutes, stirring constantly.
Gradually whisk in chicken broth, followed by heavy cream, ensuring a smooth sauce.
Return the chicken to the skillet, cover, and simmer for 20-25 minutes until the chicken is cooked through and the sauce thickens.
Garnish with fresh parsley before serving, if desired.