Our biggest beef with casseroles is that they make lots of dirty dishes. We modified our old recipe so that now the squash is “steamed” in the skillet with the onion and garlic, meaning one less pan to clean. We’ve kept the seasonings simple here, but feel free to add chopped thyme and parsley or spice blends like curry powder to liven things up.
Preheat the oven to 350°F. Lightly butter a 2-quart baking dish.
Heat in a large skillet over medium-high heat:
Add and cook, stirring, until softened and golden, about 7 minutes:
Add:
Cover the skillet and cook until the squash is crisp-tender, 7 to 9 minutes. Uncover and allow any excess liquid to cook off. Transfer to a medium bowl and let cool for 5 minutes. Stir in:
Spread the squash mixture into the prepared baking dish. Combine in a small bowl and sprinkle over the top:
Dot with:
Bake until bubbling and golden, about 35 minutes.