Slow Cooker Salisbury Steak

to 3 slices white bread, torn into small pieces 

dried onion

2% milk

to 2 pounds lean ground beef sirloin (90/10) (I used Certified Angus Beef ® brand)

dried thyme

to 1 1/2 tsp. salt 

black pepper

Worcestershire sauce 

large egg, slightly beaten

olive oil, for browning

sliced onion (about 1 medium onion sliced)

jar of prepared beef gravy

can of condensed cream of mushroom soup (I used low fat)

instant coffee granules (optional, but so good!)