The potato and broccoli rabe casserole is a rich side dish or a vegetarian main that wins you over with the contrast between the sweetness of the potatoes and the slightly bitter note of the greens. This preparation is based on a double texture: a base of steamed potatoes mashed and flavored in a pan with the broccoli rabe (rapini), enriched by a melting core of asiago cheese cubes. The final gratin with Parmesan and breadcrumbs creates a golden crust that hides a soft, velvety interior. It’s a genuine, substantial homemade casserole, ideal for a family dinner or to accompany your favorite mains. Follow my technical steps to get a perfect golden top and an impeccable gooey center!
If you love potatoes try the sand-like potatoes and pumpkin, the potato millefeuille, the stuffed potato roll or even the savory pie with potatoes and asiago.
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OTHER RECIPES WITH POTATOES
- Difficulty: Easy
- Cost: Budget-friendly
- Preparation time: 20 Minutes
- Cooking time: 40 Minutes
- Portions: 6 Servings
- Cooking methods: Boiling, Steaming, Oven
- Cuisine: Italian
- Seasonality: Spring, Summer and Autumn
Ingredients for your potato casserole
- 2.2 lb potatoes
- 28 oz broccoli rabe (rapini)
- 5.3 oz asiago cheese
- 2.1 oz Parmesan
- 2 cloves garlic
- to taste breadcrumbs
- to taste extra virgin olive oil
- to taste salt and pepper
Tools
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pressure cookerThe cat apron
- Pressure cookers
- Steamer basket
- Pans
- Baking dish
Steps to prepare the potato and broccoli rabe casserole
Start preparation after steaming the potatoes until tender. In a pot of boiling salted water, blanch the cleaned broccoli rabe for about 5 minutes, then drain well. In a large pan, heat a drizzle of extra virgin olive oil with the two garlic cloves and sauté the broccoli rabe, seasoning with salt. Once flavored, add the potatoes (which you can roughly mash with a fork) and let the flavors meld for a few minutes over high heat. This step is the technical secret to the success of your flavorful casserole: sautéing in the pan removes excess moisture from the greens and intensifies the seasoning’s flavor.
Remove the garlic cloves from the pan and turn off the heat. Add half of the Parmesan grated and mix vigorously with a wooden spoon. Finishing off the heat allows the cheese to bind to the steamed potatoes and the vegetables without stretching excessively at this stage, creating a creamy, even base. Taste and, if necessary, adjust the salt. The consistency of your casserole mixture must be thick and workable; if it seems too dry, you can add a tablespoon of the broccoli rabe cooking water or a drizzle of raw olive oil to soften the mass.
Take a baking dish, grease it with a little extra virgin olive oil and sprinkle the bottom with a thin layer of breadcrumbs. Spread half of the potato and broccoli rabe mixture, leveling it well with the back of a spoon. Add the asiago cubes evenly over the surface and cover with the remaining mixture. Asiago, thanks to its melting properties, will create the typical gooey core of a homemade casserole. Be sure to seal the edges well with the top mixture to prevent the cheese from leaking out during baking, which would spoil the presentation.
Level the surface well and finish: sprinkle generously with breadcrumbs, the remaining Parmesan and a final drizzle of extra virgin olive oil. Bake in a preheated conventional oven at 356°F for about 20-25 minutes. Since all ingredients are already cooked, this time is needed exclusively to melt the asiago and obtain a golden, crispy gratin. If you want an even more pronounced crust, you can activate the grill function for the last 3-4 minutes of cooking. Remove your potato casserole from the oven and let it rest for 5-10 minutes before serving: this technical rest will allow the flavors to stabilize and make slicing the portions neater.
Tips for a perfect result
Well-dried potatoes: When you add the steamed potatoes to the pan, make sure they are not watery. If necessary, let them evaporate well before mashing so the casserole will keep its shape without falling apart.
Well-drained broccoli rabe: After blanching, slightly squeeze the greens before sautéing. Excess water could make the base of your potato casserole too soft.
Choice of baking dish: Use a baking dish that allows a thickness of at least 1.2-1.6 in (3-4 cm). A casserole that is too thin will tend to dry out too quickly in the oven, losing its characteristic internal softness.
Tasty variations
Spicy touch: Add a pinch of chili when sautéing the broccoli rabe for a bolder, typically Mediterranean flavor.
Smoky notes: Replace the asiago with smoked scamorza to give the casserole an extra aromatic kick and contrast the potatoes’ sweetness.
Crispy enrichment: Mix toasted pine nuts or chopped walnuts into the breadcrumbs topping for an even more gourmet and original gratin.
Storage
In the refrigerator: The casserole keeps well for 2-3 days in an airtight container. In fact, the day after the flavors will be even more harmonious.
Reheating: Reheat it in the oven at 320°F for 10 minutes or in a non-stick pan with a lid; the microwave is convenient but may soften the breadcrumb crust too much.
Freezing: You can freeze the homemade casserole already portioned. When needed, put it directly in a convection oven at 338°F until the asiago center is gooey again.
Now it’s your turn!
The potato and broccoli rabe casserole is the ideal recipe to bring seasonal greens to the table in a tasty, satisfying way. Its crunchy crust hides such a soft heart that it will win everyone over at the first bite.
How do you prefer to enjoy it? Do you like the classic version with asiago or would you try a more intense variation with pecorino? Tell me in the comments if the gratin turned out nicely golden and if this dish has become the new star of your autumn dinners!
FAQ (Questions & Answers)
Can I use boiled potatoes instead of steamed ones?
Yes, but steamed potatoes retain less water and preserve their original flavor better, guaranteeing a firmer consistency for your potato casserole.
The broccoli rabe is too bitter, what can I do?
You can blanch them twice, changing the water between cooks, or add a pinch of sugar to the boiling water to soften the bitter note of the greens.
Can I prepare it in advance?
Certainly! You can assemble the homemade casserole in the morning for the evening, keeping it in the fridge and baking it only when needed to get the maximum gooey effect.
