Homemade Sweetened Condensed Milk
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Two ingredients and about 40 minutes of patient stirring is all it takes to make something most people assume can only come from a can. Whole milk and sugar simmered low and slow until the mixture reduces by more than half and transforms into a thick, sweet, slightly caramelized condensed milk that works in any recipe calling for the canned version. It costs almost nothing to make, uses ingredients you already have, and produces something that tastes noticeably better than the shelf version because it’s fresh and you made it yourself.
The optional butter and vanilla turn this into something even more special. A spoonful of the vanilla butter version stirred into coffee is one of the best small kitchen pleasures there is.
Why You’ll Love This Recipe
- Two pantry staples and a saucepan. That’s the entire equipment and ingredient list.
- This costs a fraction of what a can of sweetened condensed milk costs at the grocery store and makes exactly as much as most recipes call for without any leftovers sitting in the refrigerator.
- The optional butter addition produces a slightly richer, more complex result that tastes specifically like something homemade in the best possible way.
- Once you know how to make this you’ll never feel stuck without condensed milk in a recipe again.
Ingredients Needed to Make Homemade Sweetened Condensed Milk
- Whole milk: the base. Whole milk produces the richest, most full-bodied result. Lower fat milks work but produce a thinner, less rich finished product that may need slightly longer to reduce to the right consistency.
- Granulated sugar: sweetens and also contributes to the slight caramelization that happens during the long slow simmer and gives homemade condensed milk its distinctive depth.
- Butter (optional): stirred in off the heat it adds a richness and a slight buttery depth that makes this taste more indulgent than the plain two-ingredient version.
- Vanilla extract (optional): adds warmth and a subtle floral sweetness that makes this excellent stirred into coffee, drizzled over desserts, or used anywhere the vanilla note is welcome.
How to Make Homemade Sweetened Condensed Milk
Step 1: Combine and Simmer
Add the milk and sugar to a medium saucepan and stir to combine. Bring to a gentle simmer over medium-low heat.
Step 2: Reduce Low and Slow
Continue simmering and stirring frequently for 30 to 40 minutes. The mixture will gradually reduce in volume and deepen slightly in color. Don’t increase the heat to speed the process.
Step 3: Check for Doneness
The condensed milk is ready when it has reduced to about 1 1/4 cups and coats the back of a spoon without running off immediately. It will look slightly thinner than canned condensed milk at this point but will thicken considerably as it cools.
Step 4: Finish and Cool
Remove from heat. Stir in the butter and vanilla if using. Cool completely at room temperature then transfer to a sealed jar and refrigerate.
Storing
Store in a sealed jar in the refrigerator for up to 2 weeks. The condensed milk thickens further as it chills and will be noticeably thicker cold than it was warm in the pan. If it becomes too thick to pour stir in a small splash of warm milk to loosen it slightly.
How to Use Homemade Sweetened Condensed Milk
Use as a direct substitute for canned sweetened condensed milk in any recipe in the same amount. Stir into coffee or tea in place of sugar and cream for a sweet, rich addition that dissolves beautifully. Drizzle over fresh fruit, ice cream, or warm bread. Use in baking for fudge, caramel, key lime pie, magic cookie bars, and any other recipe that calls for a can. The vanilla butter version is especially good anywhere the condensed milk is the star flavor rather than a background ingredient.
What People Ask About Homemade Sweetened Condensed Milk
Why does it take so long to reduce?
The reduction happens through evaporation which is a gradual process that can’t be safely rushed with higher heat. The water content in the milk has to slowly evaporate away until the milk solids and sugar are concentrated into the thick, sweet, slightly caramelized mixture that makes condensed milk what it is. Higher heat evaporates the water faster but also scorches the milk solids and caramelizes the sugar too aggressively which produces a burnt flavor and a grainy texture. Low and slow is what produces the smooth, clean, properly sweet finished product.
Can I use a lower fat milk?
Yes but the result will be thinner and less rich than a whole milk version. Two percent milk produces an acceptable result that needs slightly longer to reduce. Skim milk produces a noticeably thinner, less full-bodied condensed milk that may not set as firmly when chilled. Whole milk is specifically recommended for the closest result to the canned version in both texture and richness.
How do I know it’s done if I don’t have a measuring cup handy?
The spoon test is the most reliable visual indicator. Drag a clean spoon through the simmering mixture and hold it horizontally. If the condensed milk coats the back of the spoon evenly and a line drawn through it holds without running back together it’s ready. The mixture will also look slightly thicker and more opaque than it did at the start and may have taken on a very slight golden tone from the slow caramelization of the sugar.
Can I make this dairy-free?
Yes. Full-fat coconut milk in the same amount produces a rich, slightly tropical condensed milk that works beautifully in most recipes especially those with chocolate, lime, or tropical flavors. Oat milk and cashew milk both work but produce a thinner result that may need slightly longer to reduce. Coconut milk is the most reliable dairy-free substitute for producing a texture closest to the whole milk version.
Is this the same as evaporated milk?
No. Evaporated milk is unsweetened milk that has been reduced by about half. Sweetened condensed milk has sugar added and is reduced further producing a much thicker, much sweeter result. They’re not interchangeable in recipes. This recipe makes sweetened condensed milk specifically and should only be substituted for sweetened condensed milk in recipes, not for evaporated milk.
Can I double the recipe?
Yes. Use a wider saucepan if doubling so the larger volume of liquid has enough surface area to evaporate efficiently. A narrow deep pot with double the liquid takes significantly longer to reduce than the same amount in a wider pan. The finished yield and the texture stay the same. The reduction time may increase slightly so use the spoon test and the visual reduction rather than strict timing as your guide.
Homemade Sweetened Condensed Milk
Ingredients
Method
- Combine the milk and sugar in a medium saucepan and stir to combine.
- Bring to a gentle simmer over medium-low heat stirring frequently.
- Continue cooking and stirring for 30 to 40 minutes until the mixture has reduced to about 1 1/4 cups and coats the back of a spoon. Don’t rush this with higher heat.
- Remove from the heat. Stir in the butter and vanilla if using.
- Cool completely before transferring to a jar and refrigerating.
Notes
Stir frequently especially in the last 10 minutes when the mixture has reduced and is more concentrated. This is when scorching is most likely to happen.
The spoon test is your best guide. Drag a spoon through the mixture and hold it horizontally. If the condensed milk coats the back and doesn’t run off immediately it’s ready.
Cool completely before using or storing. It thickens significantly as it cools and what looks slightly thin in the pan will be the right consistency once fully chilled.
