Made this up today and really liked it
5 pounds of potatoes, cut in six or 8 large pices per potato
1/2 stick of butter
1 TBS olive oil
1 large oninon cut in same size pieces.
Salt, peppe, and Garlic to taste
1 lemon cut in half
Put all in crockpot expect the lemon stir to coat the potatoesv s, then lay the lemon on top and cook on low for about 6 hours.
This made for a simple supper when I put porkchops and BBQ sauce in another crock pot.