4cups(364g)fresh broccoli florets and stems, chopped - (stems should be finely chopped)
juice of 1/2 lemon
2tablespoons(28g)butter
¼cup(40g)chopped onions
1clovegarlic, minced
1stalk(40g)celery, chopped
¾cup(72g)minced mushrooms
1tablespoonflour
1(340 g)12-ounce can regular evaporated milk
½teaspoonsalt
freshly ground black pepper
⅛teaspoonwhite pepper
pinch(pinch)of red pepper flakes - optional
1 ¼cup(250g)cooked rice - or use leftover rice
1 ½cups(170g)shredded mild Cheddar cheese
Instructions
Steam the Broccoli: Microwave 4 cups fresh broccoli florets and stems, chopped in a covered dish on HIGH for about 3 minutes, or until just tender and bright green. Squeeze the juice of 1/2 lemon over the warm broccoli and set aside.
Make the Sauce: In a large skillet, melt 2 tablespoons butter over medium heat. Add 1/4 cup chopped onions, 1 clove garlic, minced, 1 stalk celery, chopped, and 3/4 cup minced mushrooms. Sauté for about 3 minutes, or until softened. Stir in 1 tablespoon flour and cook for 1 minute. Whisk in 1 12-ounce can regular evaporated milk and cook until slightly thickened. Season with 1/2 teaspoon salt, freshly ground black pepper, 1/8 teaspoon white pepper, and a pinch of red pepper flakes. Stir in 1 cup (113 g) of the shredded Cheddar cheese and mix until melted.
Combine and Assemble: Add the cooked broccoli and 1 1/4 cup cooked rice to the sauce and stir gently to combine. Transfer the mixture to a greased 1½-quart casserole dish. Sprinkle with the remaining 1 1/2 cups shredded mild Cheddar cheesealf cup of shredded Cheddar cheese.
Bake the casserole: Bake at at 350˚F (180˚C) for about 30 minutes, or until it is hot and bubbly.
Notes
Can I make this ahead of time? Yes. Assemble it ahead, but wait to bake. Stir in a little extra liquid if it’s been sitting a while, since rice absorbs moisture as it rests.Can I freeze the sauce ahead of time? Absolutely. Let it cool completely and freeze it flat in a zip-top bag. If it looks separated after thawing, a splash of milk or cream will bring it back together.Microwave Instructions (Alternate Method): Steam the broccoli as directed. In a 2-quart microwave-safe batter bowl, combine 2 tablespoons (28 g) butter, ¼ cup (40 g) chopped onions, 1 clove garlic (minced), 1 stalk (40 g) celery (chopped), and ¾ cup (72 g) minced mushrooms. Cover and microwave on HIGH for 5 minutes. Stir in 1 tablespoon flour. Whisk in 1 (12 oz / 340 g) can evaporated milk. Microwave uncovered on HIGH for 6–7 minutes, whisking after 4 minutes, then once a minute, until thickened. Season and stir in cheese as in the stovetop version.