Can I use fresh beets instead of canned for this red beets recipe?

This red beets recipe works with fresh beets as long as they're fully cooked before they go into the sauce; roast them whole at 400°F wrapped in foil for 45 to 60 minutes until a knife slides in with little resistance, then peel and dice.

Why did my sauce turn out lumpy?

Lumpy sauce usually means the cornstarch hit hot liquid before it was fully whisked into the sugar, salt, and pepper; mixing the dry ingredients thoroughly first and stirring constantly as the liquid heats prevents this every time.

How long do Harvard beets last in the refrigerator?

Harvard beets keep well in an airtight container in the refrigerator for up to 4 days, and the flavor actually deepens a bit after the first day as the sauce continues to soak into the beets.

Can I make this red beets recipe ahead for a holiday dinner?

This red beets recipe is one of the easier make-ahead sides for a holiday table, since you can cook and dice the beets up to two days in advance and finish the sauce in about 10 minutes right before serving.

Why is my sauce too thin?

A thin sauce usually needs another 2 to 3 minutes of gentle simmering to let the cornstarch fully thicken; add a little more time before reaching for extra cornstarch.

Can I double this recipe for a crowd?

This red beets recipe doubles easily for a crowd; just use a larger saucepan so the sauce has enough room to reduce properly without boiling over.

What's the difference between Harvard beets and regular roasted beets?

Regular roasted beets are simply seasoned with olive oil and salt, while Harvard beets are simmered in a sweet-tangy cornstarch sauce that gives them a glossy coating and a more complex, balanced flavor.

Sweet-Tangy Harvard Red Beets Recipe

Ingredients

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1-1/2 cups cooked beets, drained, skinned, and diced (reserve 3/4 cup liquid from canned beets; add water if needed to make 3/4 cup)
2 tablespoons sugar
1 tablespoon cornstarch
1/2 teaspoon salt
Black pepper to taste
3 tablespoons apple cider vinegar
2 tablespoons butter

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Instructions

Drain and dice the beets: Drain the canned beets in a fine mesh strainer set over a bowl, pressing gently so you collect every last drop of that liquid gold underneath. You need ¾ cup of it for the sauce, so if the can comes up short, top it off with plain water. Dice the beets into ½ inch cubes now if they aren’t pre cut, so they’re ready the second the sauce is thick and waiting for them.
Whisk the dry ingredients first: In a medium saucepan, off the heat, whisk together the sugar, cornstarch, salt, and a few good cracks of black pepper until you honestly cannot feel a single clump against the bottom of the pan. Skip this step or rush it and you’ll be fishing gluey little cornstarch pockets out of your sauce later, and nobody wants that on a holiday table.
Stir in the liquid: Pour in your reserved beet liquid and the apple cider vinegar, then whisk until the mixture is completely smooth with no dry streaks hiding in the corners of the pan. This is the moment that sets up whether your sauce turns out silky or sad, so give it the full attention it deserves.
Bring it to a real boil: Set the pan over medium heat and stir constantly as it heats. Cornstarch needs steady movement or it forms thick, gluey pockets instead of a smooth glaze, so keep that spoon moving until you feel the sauce suddenly thicken and grab it.
Add the beets and butter: Stir the diced beets and butter directly into the thickened sauce. The butter should melt in within a few seconds and leave the whole pan looking rich, glossy, and frankly a little irresistible.
Keep the final simmer gentle: Once the beets and butter go in, you only need 8 to 10 minutes on a low simmer with small bubbles around the edges. Not a hard boil, or the beets will start to break down and lose that clean, tender bite.
Check the consistency: The sauce is ready when it looks glossy and coats the beets in a thick, even layer clinging to the back of your spoon. If it’s still thin, give it another 2 to 3 minutes rather than reaching for more cornstarch, since patience fixes this faster than extra starch ever will.
Serve warm: Spoon everything into a serving dish while it’s still hot and glossy. Harvard beets lose a little shine as they cool, so this is their best moment on the table.

Notes

A Note on Fresh Beets Instead of Canned

Scrub 3 medium beets clean with a vegetable brush, wrap each one whole in foil, and roast on a baking sheet at 400°F for 45 to 60 minutes, until a knife slides in with little resistance.
Let them cool enough to handle, then peel and dice into ½ inch cubes and pick up the recipe at “Whisk the dry ingredients first,” using water in place of the reserved can liquid. It’s a genuinely deeper, earthier beet, tested side by side against canned, but budget an extra hour since this isn’t the quick weeknight version anymore.

Author: Melissa Sullivan
Prep Time: 10 minutes
Cook Time: 15 minutes
Category: Vegetables
Method: Simmering
Cuisine: American