Measure ingredients and ready your pan. Having everything at hand (mise en place) cuts stress and keeps timing tight so the oats finish when the vegetables are at their peak.

Toast the oats: In a medium saucepan over medium heat, add the dry oats and toast, stirring constantly, for 1–2 minutes until fragrant and slightly nutty. Toasting the oats intensifies their flavor and reduces the raw 'starchy' note, giving a deeper, more complex base for a savory bowl.

Simmer the oats: Add the 3 cups low‑sodium vegetable broth (or water) and a pinch of salt to the toasted oats and bring to a gentle boil. Reduce heat to low and simmer, uncovered, stirring occasionally, until creamy and tender — about 8–10 minutes for old‑fashioned oats. Keeping the pot uncovered lets some liquid evaporate so the oats finish creamy but not gluey; occasional stirring prevents sticking and releases some of the starch for a silky texture.

Meanwhile, heat a large nonstick or stainless‑steel skillet over medium‑high heat and add the olive oil. Heating the pan before the oil ensures the oil shimmers quickly and prevents the mushrooms from steaming (which leads to sogginess).

Sauté the mushrooms: Add the sliced mushrooms in a single layer (if they don’t all fit, do them in two quick batches) and season lightly with salt. Let them brown undisturbed for about 2–3 minutes, then stir and continue to cook until deeply caramelized — another 3–4 minutes. Browning creates Maillard flavor (meaty, savory notes) that make this bowl feel restaurant‑quality. If the pan dries and the mushrooms look like they’ll burn, add a splash of broth or a few drops of oil.

Add tomatoes and finish mushrooms: Add the halved cherry tomatoes to the skillet and cook 1–2 minutes until they begin to soften but still hold shape. The tomatoes add a bright, juicy counterpoint to the earthy mushrooms; quick cooking keeps their fresh sweetness intact.

Wilt the spinach: Push the mushroom‑tomato mixture to one side, add the baby spinach in handfuls and cook, tossing, until just wilted — about 1–2 minutes. The rapid wilt in the hot pan preserves spinach’s color and fresh flavor. Season with black pepper and a pinch of red pepper flakes if using.

Finish the oats: Taste and adjust the oats for seasoning (add a touch more salt if needed). If they’re thicker than you like, stir in a splash of warm broth to loosen. A final stir and seasoning check ensure the grains complement the toppings without tasting flat.

Assemble the bowls: Divide the oats between two bowls. Top each with half the sautéed mushrooms, spinach and tomatoes. Scatter 2 tablespoons crumbled feta and 1 tablespoon pumpkin seeds over each bowl. The contrast of warm oats, tangy feta, and crunchy seeds is what makes the dish sing.

Final brightener and serve: Finish with a drizzle of good olive oil (optional), a final crack of black pepper and, if you like, an extra pinch of red pepper flakes. Serve immediately so the textures—creamy oats, tender vegetables, crunchy seeds—are at their best.