Congrats on your engagement.

I second the sausage casserole idea!

Also, I sometimes slice them into rings and freeze individual portions, which can then be added to leafy/vegetable salads to get some protein. One of my DPs favourite salad-as-a-meal lunches is sausage, cubed roasted sweet potato or pumpkin(also freezes well) and fresh baby spinach, with a little bit of dressing and a sprinkle of pepitas (pumpkin seeds).

Little rings of sausage are also good added to potato salads.