Rinse roast and pat dry. Rub it down with 1 tsp of garlic salt and 1 tsp of black pepper.
Place roast into a hot skillet and sear each side for approximately 2 minutes. It will get a little smokey in the house.
Place washed potatoes in the bottom of a 6 quart slow cooker and layer the following on top: roast, carrots, onions and garlic.
Pour broth over slow cooker contents.
In a medium bowl, mix crushed tomatoes, tomato sauce and remaining salt and pepper. Pour mixture over contents of the slow cooker and set to low for 8 hours.
Remove roast and veggies from slow cooker and serve. If you are a gravy kind of person, see the following gravy recipe.
Gravy:
Pour one cup of roast juices and bits into a medium bowl. Slowly whisk in flour and granules until throughly mixed.
Pour remaining juices in medium sauce pot and bring to a gentle boil. Whisk in flour mixture.