Okay, this one was a doozy for me to get the par time. So I just wanted to help out if others are also having problems. This may only get you the par time (I was able to get a time of 6.73), not the high score. You can just redo a different way for that.

Select "Show Solution" (to get a good placement of one of the giant marshmallows). Stop game. Move reflector arrow just to the right of the ginseng factory but left of the springboard on the left. Aim the reflector left. Move the giant marshmallow on the right springboard to the top right corner above (high enough to explode the 3 explodomallows below) and lined between the 1st and 2nd explodomallow (left to right). The bottom of the giant marshmallow is lined up with the middle of the giftbox on the top right. The idea is to have it drop onto the 3 explodomallows, the explosion shoots the giant marshmallow back up, then it eventually lands on the right springboard about just center of it.

Here's the sequence of events:

1) Wait for the giant marshmallow to drop onto the 3 explodomallows.

2) Once you get the explosion, shoot the ginseng factory to hit the happy switch.

3) Eets will jump.

4) Springboard the left giant marshmallow to propel Eets onto the middle platform.

5) Eets will jump from the middle platform. Springboard the right giant marshmallow to propel him up to the puzzle piece.

Trial and error. The most important thing is the proper placement of the giant marshmallow in the top right corner above the 3 explodomallows. It needs to eventually come to a stop in the middle of the the right springboard. Adjust the placement of the giant marshmallow as needed. Cheers and good luck.