Cook the Rice: Start the whole grain rice according to package directions (typically simmers for ~45 minutes).
Preheat Oven: Set oven to 200°C (390°F) and line baking sheets with parchment paper.
Roast the Tofu: Toss cubed tofu with a drizzle of olive oil, spread evenly on a prepared baking sheet, and roast at 200°C for 12 to 15 minutes (15 minutes maximum) until crisp.
Roast the Beets & Sweet Potatoes:
Red Beets: Toss peeled, chopped beets with olive oil, spread on a baking sheet, and roast at 200°C for 15 to 20 minutes until tender.
Sweet Potatoes: Toss peeled, chopped sweet potatoes with olive oil, spread on a baking sheet, and roast at 200°C for 10 to 15 minutes.
Sauté the Pan Vegetables:
Heat olive oil in a pan over medium heat. Add the washed and chopped champignons and sauté for about 10 minutes.
Add sliced carrots and cook for 5 minutes.
Add diced bell pepper and cook for another 3 to 4 minutes.
Stir in the frozen peas and heat through until warm and tender.
Assemble the Bowl: Divide cooked whole grain rice among four bowls. Layer roasted tofu, roasted root vegetables, and the sautéed mushroom & vegetable mix on top.
Garnish & Serve: Drizzle generously with soy sauce to taste, top with chopped fresh onions and sunflower seeds, and serve warm.