Indian Beef Shepherd's Pie

Ingredients

• 1 pound Ground Beef (93% lean or leaner)
• 1 head cauliflower, cut into florets and stem pieces
• 1 teaspoon salt, divided
• 1/4 teaspoon turmeric
• 1-1/2 teaspoons ground ginger
• 1-1/2 teaspoons garam masala
• 2 medium tomatoes, seeded, diced ( about 1-1/2 cups)
• 1/2 cup frozen peas
• 1 medium lemon, sliced into wedges