Barley and Wild Rice Stuffing

Mix chicken stock, barley, brown and wild rice, fennel seed, and 1/2 teaspoon salt together in a saucepan; bring to a boil. Reduce heat, cover, and simmer until rice and barley are tender and stock has been absorbed, 35 to 40 minutes.

Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13-inch casserole dish.

Melt butter in a skillet over medium-low heat; cook and stir onion and 1/2 teaspoon salt in the melted butter until onion is softened, 5 to 10 minutes. Cook and stir apple into onion until apple begins to soften, about 2 minutes. Add garlic, sage, rosemary, thyme, and black pepper to onion-apple mixture; cook and stir until fragrant, 2 to 3 minutes. Stir barley mixture into seasoned onion-apple mixture; transfer to the prepared casserole dish. Loosely cover stuffing with aluminum foil.

Bake in the preheated oven until heated through and flavors have blended, about 20 minutes.