In a large skillet, sauté the diced onion and garlic in olive oil, until nicely browned.: The moment the diced onion hits the warm olive oil you will hear a gentle sizzle and smell the sharpness give way to a sweeter aroma. As the onion softens, its edges will turn translucent and then take on light golden brown flecks, signaling the Maillard reaction that builds savory depth. When you add the minced garlic , stir constantly and watch for a toasty, nutty fragrance; this happens quickly, so reduce heat if the pan gets too hot to prevent bitter burned garlic . A common mistake here is rushing the heat, which browns the outsides while leaving pieces raw; keep the heat moderate and stir often so everything softens evenly.
Add the shredded zucchini, salt, and pepper. Cook, stirring occasionally, for about 10 minutes.: As the shredded zucchini goes into the skillet it will release a soft hissing sound as moisture meets the hot pan, and you will see the volume shrink as the strands wilt. The salt draws out extra liquid while the freshly ground pepper contributes a subtle warmth. Cook until the zucchini is tender and glossy rather than pale and floppy; it should yield easily to a fork and smell faintly sweet and vegetal. To avoid a watery outcome, let excess moisture evaporate by keeping some space in the pan and turning up the heat briefly if needed, but stir frequently to prevent sticking. Overcooking can make the texture mushy, so trust the fork test and stop once tender.
Add the milk, dill, and cooked rice. Stir, and cook for another 5 minutes over low heat, until everything is heated through. Serve hot.: When you pour in the oat milk, listen for a gentle simmer and watch the mixture become creamier as the liquid coats the wilted zucchini and grains of rice . The scent will round out, shifting from sharp aromatics to a cozy, milky warmth. Fold in the chopped dill last so its bright, herbal notes remain vivid, and then incorporate the cooked rice so each grain is evenly coated. Keep the heat low to prevent the milk from bubbling vigorously, and stir gently until the pan smells unified and steamy. A common slip is adding the rice too early while the pan is too hot, which can dry out the grains; low heat allows flavors to marry without losing moisture.
