Combine the flour, salt, black pepper, and dried oregano in a shallow dish and set aside.
Dredge both sides of each chicken tender in the flour mixture.
Melt the butter and olive oil in a skillet over high heat and place the floured chicken inside.
Cook the chicken tenders for 3-4 minutes on each side. Once all the chicken is cooked, remove from the skillet and set aside.
In the same skillet, sauté the minced garlic and chopped onions until they become translucent.
Add in the mushrooms and cook until they soften. Then pour in the Marsala wine and chicken broth.
Add the cooked chicken back into the skillet and pour in the heavy cream. Cook for another 5 minutes and serve with mashed potatoes or pasta.
Notes
How do you make a thick marsala sauceIn order to thicken any sauce, you can add some cream to it or you can add cornstarch instead. If you use cornstarch, be sure to dissolve 1 teaspoon of cornstarch with 1 tsp of the simmered liquid for each cup of sauce.