...which is just

   function bakeCake() {
      const ingredients = gatherIngredients();
      const batter = mix(ingredients);
      const batterInPan = pour(batter, pan);
      bake(batternInPan, 350, 45); // this is an in-place modifying function, I guess
      const cooledCake = coolOff(bakedInPan);
      return separateFromPan(cooledCake); 
    }

...but with an extra `do(...)` wrapper?

It could at least be

    function bakeCake() {
      return do(
        gatherIngredients,
        mix,
        batter => pour(batter, pan),
        batterInPan => bake(batterInPan, 350, 45),
        coolOff,
        separateFromPan
      );
    }

Although if we had function currying, the convention in ML languages is to put the most-commonly-piped-in param last for these functions:

    function bakeCake() {
      return do(
        gatherIngredients,
        mix,
        pour(pan), // assuming that pour(pan) returns a function that pours something into that pan
        bake(350, 45), // assuming that bake(temp, minutes) returns a function that bakes something at that temperature for that time
        coolOff,
        separateFromPan
      );
    }