Lentil Shepherd's Pie - Second Harvest

Ingredients

• 2 tbsp. olive oil
• 1 large onion, diced
• 2 carrots, peeled and sliced
• 2 celery stalks, sliced thin
• 10 oz mushrooms, sliced
• 1 tbsp. tomato paste
• 1 tbsp. Worcestershire sauce
• 1 bay leaf
• 1 cup lentils
• salt
• pepper
• 1 cup peas
• 2 lbs potatoes, cut into 1 1/2-inch pieces
• 4 cloves garlic
• 4 tbsp. butter
• 1/2 cup milk