In a pan that can fit the veal cubes into 1 layer, melt butter over medium-high heat.
Add the meat and stir until brown on all sides, about 5 minutes.
While the veal is browning, cut up and prepare the vegetables.
Place the vegetables in the slow cooker and stir them around.
When the meat cubes are browned, put them in the slow cooker so they are evenly distributed within the vegetables.
Season with salt and pepper, and place the thyme sprigs over the mixture
Pour the lemon juice and water over everything.
Put the lid on the slow cooker and cook on low for 6-8 hours.
When finished, take out the thyme sprigs before serving. Pour some of the juice over the dish after you plate!
Depending on the size of your slow cooker and how much it's filled, you may need to adjust the cooking time. I have a big slow cooker and the mixture only filled up to half way, so I only cooked it for 4 hours.