If you thought this week was busy, just wait until next week's earnings results, Jim Cramer told his Mad Money audience Friday evening. It might be a good week to take your summer vacation, he said. But if not, he's got your game plan for next week.

On Monday, investors will hear from Whirlpool (WHR) - Get Report and Halliburton (HAL) - Get Report . Let's see if consumer spending has given a bump to appliances and whether Halliburton confirms what Schlumberger (SLB) - Get Report management said about oil: that the second half should improve.

Tuesday will get even busier, with United Technologies (UTX) - Get Report and Coca-Cola (KO) - Get Report reporting after the close. Coca-Cola is steady but unexciting, while United Technologies management will have to win over investors regarding its Raytheon (RTN) - Get Report merger.

Chipotle Mexican Grill (CMG) - Get Report will also report on Tuesday. While expectations have climbed, Cramer said investors can buy some before the quarter and buy some after if the stock sells off. Visa (V) - Get Report  also will report earnings and the stock tends to selloff, even after a good quarter.

Wednesday will be the busiest day of all. Boeing (BA) - Get Report , Caterpillar (CAT) - Get Report and Tesla (TSLA) - Get Report will report quarterly results. Cramer is a buyer of Caterpillar ahead of the results. He also believes investors can buy ServiceNow (NOW) - Get Report ahead of earnings, and says Facebook's (FB) - Get Report results should be strong.

PayPal (PYPL) - Get Report will likely deliver strong results on Wednesday, but remember, this one has already rallied hard. Let's see if shares selloff afterward, he said. Finally, Xilinx (XLNX) - Get Report will report, too, and management will likely have good insight into the trade war.

This is a make-or-break quarter for 3M Co. (MMM) - Get Report when it reports earnings on Thursday, Cramer said. Amazon (AMZN) - Get Report will also report and he wants to see how its Amazon Web Services unit did. Alphabet (GOOG) - Get Report(GOOGL) - Get Report could disappoint investors, and Starbucks (SBUX) - Get Report stock tends to struggle on earnings if it has rallied hard ahead of the report, (which is has).

On Friday, McDonald's (MCD) - Get Report reports its results. This company is very consistent and has improving year-over-year comps. If the stock gets hit early in the week, Cramer said, he's a buyer.

Cramer and the AAP team are welcoming new leadership at Schlumberger. Find out what they're telling their investment club members and get in on the conversation with a free trial subscription to Action Alerts Plus.

New Outlook for Nucor

Nucor (NUE) - Get Report is starting to look like a buy, Cramer said. The company put through a $40-per-ton price increase three weeks ago, and just put through another $40 increase this week. When a company can put through price hikes like this, it's called an up-cycle, he reasoned.

Cramer explained that he's been trading steel stocks for 40 years and each turn higher started just like this, with a price increase.

Last spring, President Trump put a 25% tariff on steel to curb the dumping from Chinese competition. Steel customers instantly started buying a huge amount of steel before the tariffs went into effect, creating a supply glut in the industry. Nucor couldn't put through price increases if that supply glut wasn't already worked through.

This company is lean and has a strong balance sheet. That coupled with higher profits makes Nucor a buy. However, if the Fed actually starts cutting rates, Nucor will become a must-own stock, he said.

On Real Money, Cramer keys in on the companies and CEOs he knows best. Get more of his insights with a free trial subscription to Real Money.

GrubHub to Your Taste?

After GrubHub's (GRUB) - Get Report rally from around $60 in June to current prices near $75, is the stock worth buying? Not so fast, Cramer says. 

Cramer told investors to avoid this stock back in February and he's not changing his position now, despite the rebound. Simply put, there's way too much competition in this space, he said. GrubHub's margins are hurting, profits are hard to come by and guidance from last quarter was tepid.

Despite this, the stock has rallied impressively because Amazon has gotten out of this segment of the delivery business. Buyers are getting ahead of themselves though, Cramer reasoned, because Amazon wasn't really a big player in this field. But companies that are -- DoorDash, Uber (UBER) - Get Report Eats, Square's (SQ) - Get Report Caviar, Post Mates and others -- are still hanging in. 

GrubHub's CEO made a case that winning over a customer won them over for life. Cramer disagrees, saying customers are not loyal to the service and will likely go with the cheapest option or use certain services for certain restaurants.

Maybe GrubHub will surprise us, but the stock looks "way too risky to own here," he said.

Apollo and Artemis

Saturday marks the 50th anniversary of the Apollo moon landing. In today's dollars, that mission cost more than $150 billion, but it fueled a huge boom in both innovation and the aerospace industry. Cramer spoke with Morgan Brennan, a CNBC reporter, from the Kennedy Space Center.

Cramer asked whether one day he would be able to book a trip to the moon. The answer? Yes, and it's a "when," not "if" situation.

She explained that the government's new program, Artemis (Artemis was the twin sister of Apollo and goddess of the Moon in Greek mythology), is focused on putting people on the moon again in the next five years. However, it will cost a lot less than the first mission 50 years ago, thanks to the advances in technology.

Amazon CEO Jeff Bezos' Blue Origin company is working on a lunar lander called Blue Moon. It's pitching it to NASA, but will likely go through with the project regardless of what NASA decides. SpaceX is also doing a lot of work in the industry, garnering plenty of attention in the private market.

Investors who like the space theme can consider traditional names like Boeing or Lockheed Martin (LMT) - Get Report , as well something like the ProCure Space ETF (UFO) - Get Report .

Am I Diversified?

In the show's "Am I Diversified?" segment, Cramer took a look at viewers' portfolios to see if they were diversified enough.

The top five holdings for the first portfolio included Apple (AAPL) - Get Report , UnitedHealth Group (UNH) - Get Report , Microsoft (MSFT) - Get Report , Dow Chemical (DOW) - Get Report and JPMorgan (JPM) - Get Report . This one's actually a little harder than you think, Cramer said.

Apple and Microsoft are both mega-cap tech, but do not trade together, so we'll allow them to stay, Cramer said. Despite some bumpiness with UnitedHealth and some worries over Dow Chemical's upcoming earnings, he gave the go-ahead for this portfolio.

The next portfolio's top holdings included Walt Disney Co. (DIS) - Get Report , Lockheed Martin, Silicon Labs (SLAB) - Get Report , MasterCard (MA) - Get Report and Under Armour (UAA) - Get Report(UA) - Get Report . "That is completely diversified," Cramer said.

The next portfolio included Bank of America, Apple, Disney, Facebook and Barrick Gold (ABX) . There's nothing wrong with having gold in the portfolio, and like the first portfolio, he was fine with having both Apple and another mega-cap tech name. This portfolio is good to go, Cramer said.

The last caller's portfolio consisted of Apple, Berkshire Hathaway (BRK.A) - Get Report(BRK.B) - Get Report , Bristol-Myers Squibb (BMY) - Get Report , Caterpillar and Costco Wholesale (COST) - Get Report . "Wow, that is very diversified," he concluded. 

Lightning Round

In the Lightning Round, Cramer was bullish on Viacom (VIAB) - Get Report , Ally Financial (ALLY) - Get Report , JPMorgan (JPM) - Get Report , Bank of America (BAC) - Get Report and Roper (ROP) - Get Report .

He was bearish on Tegna (TGNA) - Get Report .

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At the time of publication, Cramer's Action Alerts PLUS had a position in SLB, CAT, FB, AMZN, GOOGL, VIAB, JPM, AAPL, UNH, MSFT, DOW, DIS, MA.