Creamy Indian-Spiced Vegan Sweet Potato Soup

Ingredients

• 2 large sweet potatoes (or 3-4 cups leftover mashed sweet potatoes)
• 1 medium onion, diced
• 2 tsp olive oil
• 1 tsp grated fresh ginger root
• 2 cloves garlic, smashed
• 1 tsp curry powder (hot or sweet; i use hot, of course)
• 1/2 tsp turmeric
• 1 tsp ground cumin
• 1 tsp fresh lemon juice, or more to taste
• 1 tsp honey, or more to taste
• 6 oz coconut milk, or more to taste
• kosher salt and fresh black pepper, to taste
• a few teaspoons of chopped apple and cashews, for garnish