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Sheet pan frozen cauliflower and white beans with lemon and parsley on a blue platter.
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Sheet Pan Frozen Cauliflower and White Beans with Lemon and Cumin

These sheet pan frozen cauliflower and white beans turn a freezer staple and a can of cannellini beans into a warm vegetable dish with lemon and cumin. Roast the frozen florets first, then add the beans once the cauliflower has begun to soften and brown. The short second stage warms the creamy beans without giving them the cauliflower’s full cooking time.
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Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings: 1 batch (approximately 2–3 light main portions with a separately cooked grain, or 3–4 small side portions)
Ingredients Equipment Method Notes

Ingredients
  

Ingredients
  • 12 ounces frozen cauliflower florets, kept frozen
  • 1 can (15 ounces) cannellini beans, drained, rinsed and patted dry
  • 2 tablespoons olive oil, divided
  • 1/2 teaspoon ground cumin
  • 1/4 teaspoon smoked paprika
  • 1 tablespoon lemon juice
  • 1 tablespoon chopped parsley
  • 1/4 teaspoon fine salt, to taste
  • Black pepper

Equipment

  • 18-by-13-inch rimmed metal sheet pan
  • Mixing bowl
  • Colander
  • Clean towel
  • Broad spatula
  • Oven mitts
  • second tray if pieces will not fit without piling

Method
 

Instructions
  1. Heat the oven and metal tray. Set a rack near the middle and heat the oven to 425°F. Put the empty rimmed sheet pan in the oven for about 5 minutes. Clear a heatproof landing space on the counter so you can remove and load the pan without balancing it on an unstable surface.
  2. Prepare the beans and finish. Drain, rinse and blot the beans. Measure the lemon juice and chop the parsley. Put these finishing ingredients aside. This leaves the frozen cauliflower as the last ingredient to come out while everything else is ready.
  3. Coat the frozen florets. Place the 12 ounces of frozen cauliflower in the mixing bowl with 1 tablespoon olive oil, cumin and smoked paprika. Toss until seasoning is distributed over the florets. Shake off loose surface ice before measuring if necessary; do not add water or rinse the frozen pieces.
  4. Spread on the hot tray. Use oven mitts to set the pan on the heatproof surface. Tip the florets onto it carefully and use the spatula to spread them into one layer. Place broad sides against the metal where possible, leaving gaps rather than a mound in the center.
  5. Give the cauliflower its head start. Roast for about 17–20 minutes. Check a thick stem with a fork and lift one piece to inspect its underside. If the largest pieces are still very firm, continue a few minutes before adding beans. The cauliflower need not be fully tender yet, because it has a second stage ahead.
  6. Add the oiled beans. Toss the dry beans with the remaining tablespoon of oil. Turn the cauliflower gently and distribute beans in the spaces around it. Avoid crushing them under a floret or scraping their skins repeatedly with the spatula.
  7. Finish the roast. Return the pan for another 8–10 minutes, checking near the earlier end. The thick cauliflower stems should yield to a fork, the florets should have some browned edges, and the beans should be thoroughly hot. Meet the frozen vegetable package's cooking endpoint as well. Remove any small finished florets if a few larger pieces need longer.
  8. Dress and serve. Remove the tray, drizzle over the tablespoon of lemon juice, and add parsley, the stated salt and black pepper to taste. Fold together with broad, gentle movements. Taste a bean and a cauliflower piece together before making any final salt adjustment, then transfer to a shallow serving bowl.

Notes

Portions and timing: One batch makes about 2–3 light main portions with a grain, or 3–4 small sides. Allow 10–15 minutes prep and 25–40 minutes roasting, about 35–55 minutes overall.
Staged roast: Keep cauliflower frozen, spread it on a rimmed metal tray and follow its package’s cooking requirements. Add the drained, blotted beans late so their centers stay creamy. Use 1 tablespoon oil at each stage; add lemon and parsley after roasting.
Leftovers: Refrigerate in shallow containers within 2 hours, or 1 hour above 90°F. Keep at 40°F or below for up to 3–4 days and reheat to 165°F. The cauliflower will soften after storage.