Turkey Shepherd's Pie (Gluten Free, Dairy Free)

Name: Turkey Shepherd's Pie (Gluten Free, Dairy Free)
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Cuisine: American
Ingredients: 1.5 pounds ground turkey; 2 teaspoons olive oil; 1 onion (chopped); 3 Tablespoons ketchup; 2 cloves garlic (minced); 1 cup white button mushrooms (sliced); 3/4 cup non-dairy milk; 1 cup frozen peas; 1/8 teaspoon white pepper; 6 Yukon gold potatoes (peeled and cut into large chunks); 3 Tablespoons vegan buttery spread; 1/2 teaspoon salt; 1/2 cup non-dairy milk; 3/4 cup Daiya non-dairy cheddar style shreds