Homemade sweet cream coffee creamer is three ingredients and about two minutes of active work. Sweetened condensed milk, half-and-half, and vanilla extract whisked or shaken together in a jar. It stores in the fridge, costs less than bottled creamer, and tastes cleaner because the ingredient list is short enough to read in one breath.
The sweetened condensed milk is the base that provides sweetness, creaminess, and the specific vanilla-caramel richness associated with coffee shop-style creamer. Half a can, seven ounces, goes into one cup of half-and-half. The ratio produces a creamer that's sweet but not cloying, and thick enough to lighten coffee the way a good creamer should without being so thick it sits on top rather than blending in.

Half-and-half is the standard choice and produces a balanced result: rich enough to feel creamy, thin enough to pour easily. Whole milk produces a lighter, less rich creamer. Heavy cream produces something closer to a coffee shop-style sweet cream, richer and thicker, the kind you'd get on top of a cold brew rather than stirred into a drip coffee. Oat milk keeps it dairy-free and produces a slightly thinner, lightly oat-flavored creamer that works well in iced coffee.
All of these work. The sweetened condensed milk is already dairy and already sweet, so the secondary dairy choice is primarily about richness and thickness rather than flavor. Choose based on what you want the coffee to taste like and what's already in the fridge.
A tablespoon of vanilla extract is more than most coffee recipes use and less than it sounds in a full jar of creamer. Vanilla extract in this quantity adds a warm, floral background flavor that's recognizable as vanilla without tasting like a cookie. If you're adding cinnamon or another flavoring, you can reduce the vanilla to two teaspoons and let the other flavor come forward.
Everything into a mason jar or pitcher. Shake if it's a jar with a lid, whisk if it's a pitcher. Either produces a fully combined creamer in thirty seconds. Refrigerate and use by the expiration date on whatever dairy you used, which is typically the limiting factor. A jar made with half-and-half that expires in ten days is good for ten days; check the carton rather than the recipe for the storage window.
The base recipe is intentionally plain so it works with any coffee. Common additions that work well: half a teaspoon of cinnamon for warmth, a splash of chocolate syrup for a mocha direction, a teaspoon of caramel extract for a caramel macchiato flavor. Any of these can go in at the mixing stage or added to the jar as you go. The sweetened condensed milk base is forgiving and absorbs additional flavors without becoming unbalanced.
The oat milk version with a half teaspoon of cinnamon and a teaspoon of vanilla is the one I return to most often. It has a neutral sweetness that works equally well in hot and iced coffee, and the cinnamon adds enough warmth to feel considered without being seasonal. None of these require precision; taste as you go and adjust.

Bottled coffee creamer typically contains a long list of thickeners, emulsifiers, and artificial flavors that get the texture right but at the cost of ingredients you wouldn't choose individually. This version has three ingredients, no stabilizers, no artificial flavors, and tastes noticeably cleaner in coffee. The cost per ounce is also lower than most commercial creamers, and it uses up the half-can of sweetened condensed milk that might otherwise sit in the fridge for two weeks. Makes approximately 14 ounces. No nutrition data was provided for this recipe.
Lavender: steep two teaspoons of dried culinary lavender in the warmed half-and-half for ten minutes, strain, then cool completely before combining with the other ingredients. Pumpkin spice: add half a teaspoon of pumpkin pie spice and a tablespoon of pumpkin puree. Hazelnut: use a teaspoon of hazelnut extract in place of part of the vanilla. Brown sugar: swap the sweetened condensed milk for a homemade brown sugar simple syrup (equal parts brown sugar and water, simmered until dissolved) for a less rich, more caramel-forward result.
Homemade coffee creamer made with sweetened condensed milk, half-and-half, and vanilla extract. Shake together and refrigerate. Cleaner ingredient list than bottled creamer. Makes about 14 oz.
Servings are approximately 14 tablespoons per jar. Use by the expiration date on your dairy, not a fixed number of days. Shake or stir before each use as the ingredients can separate. No nutrition data was provided for this recipe.