Pumpkin and Potato Stew

Ingredients

• 4 large russet potatoes , peeled and chopped
• 1/2 cup whole milk
• 2 ounces cream cheese
• 2 tablespoons unsalted butter
• Kosher salt and black pepper
• 2 tablespoons olive oil
• 1 1/2 pounds beef stew meat
• 3 ½ cups cubed baking pumpkin (1/2-inch pieces)
• 1 large yellow onion, chopped
• 2 cloves garlic, minced
• 1/4 cup tomato paste
• 1 tablespoon butter
• 1/4 cup all-purpose flour
• 1 1/2 cups low-sodium beef broth
• ½ cup whole milk
• 1 cup frozen peas, plus extra for garnish