Does anyone make/sell a hechschered version in the US?
Latins make a dessert where they spread it between layers of puff pastry, like a mille feuille . They call it Milhojas de dulce de leche.
an aside: Häagen-Dazs makes a lovely Dulce de leche ice cream, but it lightens the flavor of the dulce, to suit American tastes, I suppose. The Latin version is deeper, darker.