The Old-School World War II Trick That Doubles Your Butter - Tasting Table
Mixing evaporated milk into butter stretches quantity and creates a smooth, month-lasting spread; condensed milk or churning milk/cream also yield similar extended butter.
Benjamina Ebuehi's recipe for peanut butter banana french toast | The sweet spot
Hong Kong-style peanut butter and banana French toast: brioche sandwiches filled with peanut butter and banana, dipped in egg, pan-fried, and drizzled with condensed milk.