Lentil Shepherd's Pie | Forever Fed

Ingredients

• 1 cup dry lentils (green or brown), rinsed
• 1 tablespoon olive oil
• 1 medium onion, diced
• 2 cloves garlic, minced
• 2 medium carrots, diced
• 1 cup frozen peas
• 1 cup vegetable broth
• 1 can (14.5 oz) diced tomatoes, drained
• 1 tablespoon tomato paste
• 1 teaspoon dried thyme
• 1 teaspoon dried rosemary
• Salt and freshly ground black pepper to taste
• 4 large russet potatoes, peeled and cut into chunks
• 4 tablespoons unsalted butter
• 1/2 cup milk (or more for desired consistency)