Slow Cooker Madras Lentils - {Creamy, Cozy & Pantry-Friendly}

Ingredients

• 3 cups canned lentils, rinsed and drained
• 3 cups canned tomato sauce
• 1 onion, finely diced
• 3 cups potatoes, peeled and cubed
• 6 cups spinach
• 3/4 cup canned lite coconut milk
• 4 cloves garlic, minced
• 3/4 tsp. salt
• 3/4 tsp dried oregano
• 3/4 tsp cumin
• 1/2 tsp. coriander
• 1/2 tsp. black pepper
• 1/2 tsp. red pepper flakes