Lentil Shepherd's Pie - Libby's Vegetables

Ingredients

• 1 cup green lentils
• 2 cups vegetable broth
• 5 Russet potatoes, peeled & chopped
• 4 tbsp butter
• 1/4 cup milk
• 1/2 tbsp olive oil
• 1 yellow onion, diced
• 2 cloves garlic, minced
• 1 cup sliced mushrooms
• 1 can (14.5 oz.) Libby's French Style Green Beans, drained
• 1 can (15 oz.) Libby's Pes & Carrots, drained
• 1 tbsp Worcestershire sauce
• 2 tbsp tomato paste
• 1 tsp fresh thyme leaves (plus more for garnish)
• 1/4 cup shredded sharp cheddar cheese