Slow Cooker Lamb Curry

Name: Slow Cooker Lamb Curry
Ingredients: 2 baking Potatoes; 2 cups of beef broth; 2 tablespoons of Butter; 1 bunch of Cilantro, Chopped; 2 tablespoons of Curry; 1/2 teaspoon of fennel powder; 1/2 teaspoon of Garam Masala; 3 cloves of Garlic, Minced; 1 teaspoon of Ginger; 5 1/2 pounds of Cooked Lamb stew meat; 6 ounces of Mushrooms, Chopped; 2 tablespoons of Olive Oil; 1 Onion, Diced; 1 tablespoon of Oregano; 1/2 cup of Plain Yogurt; 1 tablespoon of Rosemary; 1/2 teaspoon of Salt; 1 can of Tomato Paste