Brown one pound of ground beef with two minced garlic cloves and one small diced onion in a large skillet. Drain any excess grease.
Add one small head of chopped cabbage, 2 1/2 cups of water, 1 cup of uncooked Minute rice, 1 teaspoon of freshly ground black pepper, 1 1/2 teaspoons of garlic salt, 1 teaspoon of paprika, 1 teaspoon of sugar, a 28-ounce can of tomato sauce, and a 14.5-ounce can of petite diced tomatoes with their juice to the slow cooker.
Stir in the cooked ground beef mixture until fully combined.
Cover and cook on low for 4 to 5 hours or on high for 3 to 4 hours, until the rice and cabbage are tender.
If the mixture is too thick, add a little more water, beef broth, or chicken broth until it reaches your desired consistency.
Top each serving with shredded cheese, if desired, and serve.