Improvised Chicken in Spinach Cream Sauce

What does a vegetarian do when unexpected carnivorous company drops in for dinner? This.

1.5 chicken, bought in a frantic rush while wearing pajama bottoms and then cubed.
2 green onions, diced
2 cloves garlic, pressed or chopped
1 cup mushrooms, sliced
1 cup chopped spinach
1 tbs snipped parsley
1.5 c milk
3 tbs butter
salt, pepper
cornstarch

1. Melt 2 tbs butter in skillet/pot and add chicken, salt & pepper, parsley and green onions. Brown chicken well on all sides. Add garlic and spiniach, sautee until soft, taking care not to burn the garlic.
2. Add milk and remaining tbs of butter. Simmer on med-low for 20 minutes, stirring occasionally.
3. Turn heat up. Add corn starch (approx 1.5 tbs, but I didn't measure) and whip vigorously to thicken sauce.
4. Turn heat on high, bring to a rapid boil, and boil uncovered for 3-5 minutes to reduce liquid.

I didn't taste the chicken (obviously) but I did have some of the sauce, over potatoes, and it was quite yummy. My mom went back for seconds and my mom never eats two servings of anything. Not bad for a fly by the seat of your pants experiment, I guess.