Toasting gives dishes a nutty undertone.
In a large skillet, heat the oil, three turns of the pan, over medium-high.Savory French Toast:
Add the mushrooms and cook, stirring often, until deep golden and beefy in aroma, about 10 minutes. Add the shallots and garlic; season with salt and pepper. Cook, stirring often, until fragrant, 1 to 2 minutes. Add the marsala. Cook, stirring often, until the wine evaporates and absorbs into the mushrooms, 1 to 2 minutes. Add the stock. Cook until the stock reduces slightly, 2 to 3 minutes. Reduce the heat to low; stir in the mascarpone. Spoon over the Savory French Toast.