Metal and wood kitchen tool - any ideas?

A dear neighbor who helped raise me as a child recently went into a nursing home for dementia; I am helping her daughter clean out her house and we came across this in the kitchen utensil/tool drawer.

She was born in Germany in the 1930s and came to the states in her 20s. She was an excellent cook and baker and had many of the same utensils/tools for many years. This is one we could not figure out what it is!

Any ideas? Thank you in advance for any help!

- It is approx. 13" in length
- The 'blade' is approx. 2.5" wide at its widest part (does not appear sharp anywhere)
- It is slightly tented in the middle towards the center slit
- I put a toothpick on the metal part in the second picture to show the angle