Sautéed Spinach & Mushrooms With Tomatoes

Ingredients

• 1 teaspoon butter (or ghee, omit if you can't tolerate dairy and add a little more oil)
• 2 tablespoons olive oil
• 5-6 button mushrooms (sliced)
• 1/2 onion (red or brown, sliced)
• Handful of cherry tomatoes (cut in halves)
• 1/2 teaspoon of diced lemon rind or grated lemon zest
• 1 garlic clove (finely diced)
• 3 large handfuls baby spinach leaves (or torn English spinach leaves)
• 1/2 teaspoon sea salt
• Pinch of ground black pepper
• Pinch of nutmeg (optional, but nice)
• Drizzle of lemon juice (right at the end)