Oats baked in a dish rather than stirred on the stove, cut into four warm squares. It suits a house where people come down at different times, since it holds its heat and reheats without complaint. Make it in autumn, when grapes and new hazelnuts overlap for about a month.
The rosemary is the part that sounds wrong and is not. A single teaspoon, chopped fine, holds the whole pan on the breakfast side of the line instead of letting it slide into dessert. Hold back some of the hazelnuts for the surface too. Anything stirred through the batter goes soft in the oven, and only what sits on top crisps into a rough, nutty layer.
It is done when a nudge to the dish no longer sends a ripple through the center. Let it stand for ten minutes after that, so the custard can finish setting before you cut it. Halved figs stand in for the grapes in late summer, and walnuts for the hazelnuts. A serving carries 8 grams of fiber.