Lentil Casserole

Ingredients

• 2 tablespoons vegetable oil
• 1½ pounds very lean pork, cut into 1" cubes
• 1 cup diced onions
• 2 large carrots, peeled and sliced
• 1½ cups diced potatoes
• 2 cups sliced mushrooms
• 4 cups cooked Lentils
• 1 cup chopped, cooked Swiss chard
• ¼ cup tomato paste
• Approximately 2½ cups vegetable stock (beef or chicken stock may be substituted)
• Salt and pepper to taste
• 1 cup grated sharp cheddar cheese or any cheese of your choice (optional)