Lightly grease a 7 inch springform pan with either oil or cooking spray.
In a medium bowl, whisk together eggs, milk, lemon juice, lemon zest, and butter.
In a large bowl, combine flour, baking powder, baking soda, sugar, salt, and raspberries.
Pour wet ingredients from the medium bowl into the large bowl with dry ingredients. Using a fork, cream together mixture until combined. Do not overmix, as some lumps are fine.
Transfer mixture to greased springform pan.
Add 1 cup water to the Instant Pot® and insert steam rack. Place springform pan on top. Lock lid.
Press the Manual or Pressure Cook button and adjust cook time to 30 minutes. When timer beeps, quick-release pressure until float valve drops and then unlock lid.
Unlock springform pan and let cool completely 30 minutes.
Whisk together glaze ingredients until the consistency of corn syrup. If glaze is too thick, add more juice; if glaze is too runny, add more sugar. Gently pour glaze evenly over cooled cake. Slice and serve.