Oh, have we got a treat for you. This cake is ridiculously delicious. You might even let out an involuntary chuckle of sheer happiness when you bite into it (we can't be the only ones). Make sure your butter is at room temperature before mixing to ensure that the job is easier and that your eggs are super fresh to keep things as light and fluffy as possible.
Use an electric mixer if you have one, but you can still do a decent job of combining the ingredients by hand. Waiting for this to cook will be tough. Unfortunately, there really is no need whatsoever to "test the mixture" throughout the cooking process. Sorry about that.
Note: All slow cookers are a little bit different in temperature and calibration. This recipe was tested in Cooktop Cove's Test Kitchen using this slow cooker, which is available for purchase here.
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