Ninja Slushi Watermelon Margarita Recipe

Today, I’m going to be sharing How can you make a watermelon margarita using the Ninja slushie machine.

I know many of you just got this cool machine and want to learn how to make great cocktails at home.

This watermelon version takes the classic margarita and turns it into something special. My neighbor brought over fresh watermelon from her garden.

We sat on my back porch, and I thought about how good this sweet fruit would taste in a frozen drink.

The Ninja Slushi Watermelon Margarita Recipe became my new go-to summer drink. The machine makes it so easy to get that perfect slush texture every time.

You get all the fresh watermelon taste with that tangy lime kick. This recipe works great for pool parties or just relaxing after work.

Why You’ll Love This Watermelon Margarita Slushie?

This watermelon margarita slushie beats any store-bought mix. The fresh watermelon gives it a natural sweetness that pairs perfectly with tangy lime juice.

Your Ninja Slushi machine does all the hard work for you. Just add the ingredients and wait for the magic to happen.

The drink has the right balance of sweet and sour. It’s not too strong but has enough tequila to make it special.

The bright pink color looks great in glasses and makes every gathering feel like a celebration.

Ninja Slushi Watermelon Margarita Ingredients

• Fresh Watermelon (3 cups / 720ml, cubed and seeds removed): Pick a ripe watermelon that feels heavy for its size. The flesh should be bright red or pink with few white streaks. Remove all seeds before measuring. You can substitute with frozen watermelon chunks, but fresh tastes better.
• Water (450ml / 1¾ cups): Use cold tap water or filtered water. The amount might need small changes based on how thick you want your slushie. More water makes it lighter and fluffier.
• Fresh Lime Juice (130ml / ½ cup): Squeeze fresh limes for the best taste. You’ll need about 8-10 limes depending on their size. Bottled lime juice works in a pinch, but fresh gives better flavor. Lemon juice can substitute but changes the taste profile.
• Tequila (170ml / ¾ cup, 40% ABV): Choose a good quality silver or blanco tequila. Avoid the cheapest options as they can taste harsh. For non-alcoholic version, skip this ingredient and add extra watermelon juice.
• Orange Liqueur (85ml / ⅓ cup, 40% ABV): Triple sec, Cointreau, or Grand Marnier all work well. This adds orange flavor that complements the watermelon. You can use orange juice concentrate mixed with a little sugar as a substitute.
• Simple Syrup (60ml / ¼ cup, optional): Only add this portion needed for extra sweetness. Make your own by mixing equal parts sugar and hot water until sugar dissolves. Agave nectar works as a natural substitute.
• Salt for rim (2 tablespoons, optional): Coarse sea salt or kosher salt works best for rimming glasses. You can mix it with a little lime zest for extra flavor.

Recommended Equipment

You only need a few tools to make this recipe.

1. Ninja Slush Machine – main tool for blending.
2. Cutting Board & Knife – for chopping watermelon.
3. Measuring Cups & Spoons – to keep ingredients balanced.
4. Citrus Juicer – for squeezing fresh lime juice.
5. Pitcher or Large Mixing Cup – to combine liquids before pouring.
6. Serving Glasses – wide margarita glasses or tumblers.
7. Optional Garnishes – lime wedges, watermelon slices, or coarse salt for rimming.

Make Your Ninja Slushi Watermelon Margarita

Step 1 | Mix the Ingredients

In the Ninja Slushi machine reservoir, combine 450ml cold water, 2 cups watermelon juice, 130ml fresh lime juice, 170ml tequila, and 85ml orange liqueur.

Add simple syrup only needed. Stir gently to combine all ingredients.

Step 2 | Freeze in the Ninja Slushi Machine

Pour the mixture into the Ninja Slushi machine bowl. Do not fill past the max line. Secure the lid, choose the “Slushi” setting, and press start. The mixture will take about 30–40 minutes to reach frozen consistency.

Step 3 | Serve Immediately

When the machine beeps, the watermelon margarita slushie is ready. Pour into glasses, garnish with lime wedges or watermelon slices, and enjoy right away for the best icy texture.

Tips & Tricks

• Sweetness Check: Before you freeze the mix, taste a little drop. Dip a spoon in the liquid. If you want it sweeter, add a little more simple syrup. If it is too sweet, add a splash more lime juice.
• Super Cold Glasses: For an extra special touch, put your glasses in the freezer for 10 minutes before you serve the drink. The slushie will stay cold longer.
• Fruit Garnish: A small piece of watermelon or a thin slice of lime on the edge of the glass makes the drink look beautiful.
• Machine Error: If your Ninja machine shows an error or stops, turn it off. Wait a minute, then turn it back on and start the cycle again. Sometimes the mixture just needs a little more time to freeze.
• Thicker Slushie: If you prefer a thicker ice texture, you can add a half cup of cold water to the mixture before freezing. This gives the machine more liquid to turn into ice crystals.

How to Serve This Watermelon Margarita Slushie

Serve your watermelon margarita slushie in chilled margarita glasses for the best experience. Put the glasses in the freezer for 10 minutes before serving to keep the slushie cold longer.

Rim the glasses with coarse salt by running a lime wedge around the rim and dipping in salt. This adds extra flavor and looks professional.

For a party, you can serve in mason jars with colorful straws and umbrellas. The drink pairs perfectly with Mexican food like tacos, quesadillas, or grilled chicken.

Serve it alongside fresh fruit, chips with guacamole, or light summer salads. For non-alcoholic versions, simply leave out the tequila and orange liqueur, and add more watermelon juice. Kids love this version too.

Always serve immediately after the machine finishes for the best texture and temperature.

Ninja Slushi Watermelon Margarita Recipe FAQs

1. Why does my slushie come out too watery?

A watery slushie usually means there wasn’t enough ice or frozen fruit. Try adding more ice or using partially frozen watermelon chunks.

Also, avoid over-blending, as this can melt the ice too much. The Ninja slush machine works best when the right ice-to-liquid balance is used.

2. What if the slushie is too icy or too soft?

Adjust water for texture—more water softens the slush and less water makes it icier. Also check sugar content since too much sugar or alcohol can stop the freezing process. Use small test batches to find the best balance.

3. How strong is this margarita slushie?

This drink has about 12-13% alcohol by volume, so you’ll taste the tequila but it’s not too strong. If you want it lighter, just use less tequila or orange liqueur, or add extra water. You can make it how you like!

4. How long will this slushie stay good in the freezer?

Your watermelon margarita slushie will stay fresh in the freezer for up to one week when stored in an airtight container.

After that, the flavors start to fade and ice crystals can form, changing the texture. For the best taste and consistency, consume within 3-4 days.

When ready to serve frozen leftovers, let them thaw for 10-15 minutes and stir well. The texture won’t be exactly like fresh, but it will still be refreshing and tasty.

Never store in the regular refrigerator as it will separate and lose its slushie consistency completely.

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Yield: 4 servings

Ninja Slushi Watermelon Margarita Recipe

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Make this refreshing Ninja Slushi watermelon margarita recipe in just 50 minutes! Perfect summer cocktail with fresh watermelon, lime, and tequila. Easy step-by-step instructions for the ultimate frozen drink.

Prep Time: 10 minutes

Freeze Time: 35 minutes

Additional Time: 5 minutes

Total Time: 50 minutes

Ingredients

• 3 cups (720 ml) fresh watermelon, cubed and seeds removed
• 1¾ cups (450 ml) cold water
• ½ cup (130 ml) fresh lime juice (about 8–10 limes)
• ¾ cup (170 ml) silver/blanco tequila
• ⅓ cup (85 ml) orange liqueur (Triple Sec, Cointreau, or Grand Marnier)
• ¼ cup (60 ml) simple syrup (optional, for sweetness)
• 2 tablespoons coarse salt (optional, for glass rim)
• Lime wedges or watermelon slices (for garnish)

Instructions

1. Add cold water, watermelon juice, lime juice, tequila, orange liqueur, and simple syrup (if using) to the Ninja Slushi reservoir. Stir to combine.
2. Pour into the machine bowl (don’t pass the max line). Secure the lid, select “Slushi”, and freeze for 30–40 minutes.
3. When ready, pour into glasses, garnish with lime or watermelon, and serve immediately.

Nutrition Information:

Yield: 4 Serving Size: 1
Amount Per Serving: Calories: 238Total Fat: 0gSodium: 3mgCarbohydrates: 23gFiber: 1gSugar: 19gProtein: 1g

This Ninja Slushi Watermelon Margarita Recipe brings summer right to your glass with its perfect blend of sweet watermelon and tangy lime.

The recipe is simple enough for beginners but creates impressive results that taste like they came from an expensive restaurant.