crockpot creamed asparagus

I washed the asparagus, broke off the "woody ends" and cut the asparagus into inch and a half pieces and put into the crockpot with some butter, salt and pepper, a bit of lemon juice and I sprayed on some garlic.  Cooked on high for 15 minutes and then switched to low.  When it was
almost done, I stirred in some flour to coat the pieces and then some milk, and continued cooking.
The liquid thickened up a bit.  Next time, I might add a can of mushrooms.