Slow Cooker Teriyaki Sirloin Tip Steaks

INGREDIENTS

lbs sirloin tip steaks (see NOTES)

2 cloves

garlic, minced

1/4 cup

chopped onion

8 oz

fresh mushrooms cut in half

2 tbsp

oil

Sauce:

1/2 cup

soy sauce (I used low-sodium)

1/4 cup

brown sugar

2 tbsp

dry wine (white or red)

Thickening:

3 tbsp

cornstarch

1/4 cup

water